diff --git a/runelite-api/src/main/java/net/runelite/api/InventoryID.java b/runelite-api/src/main/java/net/runelite/api/InventoryID.java
index de07152082..5c58a476d1 100644
--- a/runelite-api/src/main/java/net/runelite/api/InventoryID.java
+++ b/runelite-api/src/main/java/net/runelite/api/InventoryID.java
@@ -28,6 +28,7 @@ public enum InventoryID
 {
 	INVENTORY(93),
 	EQUIPMENT(94),
+	BANK(95),
 	PUZZLE_BOX(140);
 
 	private final int id;
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesConfig.java b/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesConfig.java
new file mode 100644
index 0000000000..36b8ffa0aa
--- /dev/null
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesConfig.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2018 Charlie Waters
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.client.plugins.itemprices;
+
+import net.runelite.client.config.Config;
+import net.runelite.client.config.ConfigGroup;
+import net.runelite.client.config.ConfigItem;
+
+@ConfigGroup(
+	keyName = "itemprices",
+	name = "Item Prices",
+	description = "Configuration for the Item Prices plugin"
+)
+public interface ItemPricesConfig extends Config
+{
+	@ConfigItem(
+		keyName = "showGEPrice",
+		name = "Show Grand Exchange Prices",
+		description = "Grand exchange prices should be shown on tooltips",
+		position = 1
+	)
+	default boolean showGEPrice()
+	{
+		return true;
+	}
+
+	@ConfigItem(
+		keyName = "showHAValue",
+		name = "Show High Alchemy Values",
+		description = "High Alchemy values should be shown on tooltips",
+		position = 2
+	)
+	default boolean showHAValue()
+	{
+		return true;
+	}
+
+	@ConfigItem(
+		keyName = "showEA",
+		name = "Show Price Each on Stacks",
+		description = "The price/value of each item should be shown on stacks",
+		position = 3
+	)
+	default boolean showEA()
+	{
+		return true;
+	}
+
+	@ConfigItem(
+		keyName = "hideInventory",
+		name = "Hide Tooltips on Inventory Items",
+		description = "Tooltips should be hidden on items in the inventory",
+		position = 4
+	)
+	default boolean hideInventory()
+	{
+		return true;
+	}
+}
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesOverlay.java
new file mode 100644
index 0000000000..1327459093
--- /dev/null
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesOverlay.java
@@ -0,0 +1,255 @@
+/*
+ * Copyright (c) 2018, Charlie Waters
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.client.plugins.itemprices;
+
+import java.awt.Dimension;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.text.NumberFormat;
+import javax.inject.Inject;
+import net.runelite.api.Client;
+import net.runelite.api.InventoryID;
+import net.runelite.api.Item;
+import net.runelite.api.ItemComposition;
+import net.runelite.api.ItemContainer;
+import net.runelite.api.ItemID;
+import net.runelite.api.MenuAction;
+import net.runelite.api.MenuEntry;
+import net.runelite.api.widgets.WidgetID;
+import net.runelite.api.widgets.WidgetInfo;
+import net.runelite.client.game.ItemManager;
+import net.runelite.client.ui.overlay.Overlay;
+import net.runelite.client.ui.overlay.OverlayPosition;
+import net.runelite.client.ui.overlay.tooltip.Tooltip;
+import net.runelite.client.ui.overlay.tooltip.TooltipManager;
+import net.runelite.client.util.StackFormatter;
+import net.runelite.http.api.item.ItemPrice;
+
+class ItemPricesOverlay extends Overlay
+{
+	// Used when getting High Alchemy value - multiplied by general store price.
+	private static final float HIGH_ALCHEMY_CONSTANT = 0.6f;
+
+	private static final NumberFormat NUMBER_FORMATTER = NumberFormat.getInstance();
+
+	private static final int INVENTORY_ITEM_WIDGETID = WidgetInfo.INVENTORY.getPackedId();
+	private static final int BANK_INVENTORY_ITEM_WIDGETID = WidgetInfo.BANK_INVENTORY_ITEMS_CONTAINER.getPackedId();
+	private static final int BANK_ITEM_WIDGETID = WidgetInfo.BANK_ITEM_CONTAINER.getPackedId();
+
+	private final Client client;
+	private final ItemPricesConfig config;
+	private final TooltipManager tooltipManager;
+	private final StringBuilder itemStringBuilder = new StringBuilder();
+
+	@Inject
+	ItemManager itemManager;
+
+	@Inject
+	ItemPricesOverlay(Client client, ItemPricesConfig config, TooltipManager tooltipManager)
+	{
+		setPosition(OverlayPosition.DYNAMIC);
+		this.client = client;
+		this.config = config;
+		this.tooltipManager = tooltipManager;
+	}
+
+	@Override
+	public Dimension render(Graphics2D graphics, Point point)
+	{
+		if (client.isMenuOpen())
+		{
+			return null;
+		}
+
+		final MenuEntry[] menuEntries = client.getMenuEntries();
+		final int last = menuEntries.length - 1;
+
+		if (last < 0)
+		{
+			return null;
+		}
+
+		final MenuEntry menuEntry = menuEntries[last];
+		final MenuAction action = menuEntry.getType();
+		final int widgetId = menuEntry.getParam1();
+		final int groupId = WidgetInfo.TO_GROUP(widgetId);
+
+		// Tooltip action type handling
+		switch (action)
+		{
+			case WIDGET_DEFAULT:
+			case ITEM_USE:
+			case ITEM_FIRST_OPTION:
+			case ITEM_SECOND_OPTION:
+			case ITEM_THIRD_OPTION:
+			case ITEM_FOURTH_OPTION:
+			case ITEM_FIFTH_OPTION:
+				// Item tooltip values
+				switch (groupId)
+				{
+					case WidgetID.INVENTORY_GROUP_ID:
+						if (config.hideInventory())
+						{
+							return null;
+						}
+						// intentional fallthrough
+					case WidgetID.BANK_GROUP_ID:
+					case WidgetID.BANK_INVENTORY_GROUP_ID:
+						// Make tooltip
+						final String text = makeValueTooltip(menuEntry);
+						if (text != null)
+						{
+							tooltipManager.add(new Tooltip("<col=eeeeee>" + text));
+						}
+						break;
+				}
+				break;
+		}
+		return null;
+	}
+
+	private String makeValueTooltip(MenuEntry menuEntry)
+	{
+		// Disabling both disables all value tooltips
+		if (!config.showGEPrice() && !config.showHAValue())
+		{
+			return null;
+		}
+
+		final int widgetId = menuEntry.getParam1();
+		ItemContainer container = null;
+
+		// Inventory item
+		if (widgetId == INVENTORY_ITEM_WIDGETID || widgetId == BANK_INVENTORY_ITEM_WIDGETID)
+		{
+			container = client.getItemContainer(InventoryID.INVENTORY);
+		}
+		// Bank item
+		else if (widgetId == BANK_ITEM_WIDGETID)
+		{
+			container = client.getItemContainer(InventoryID.BANK);
+		}
+
+		if (container == null)
+		{
+			return null;
+		}
+
+		// Find the item in the container to get stack size
+		final Item[] items = container.getItems();
+		final int index = menuEntry.getParam0();
+		if (index < items.length)
+		{
+			final Item item = items[index];
+			return getItemStackValueText(item);
+		}
+
+		return null;
+	}
+
+	private String getItemStackValueText(Item item)
+	{
+		int id = item.getId();
+		int qty = item.getQuantity();
+
+		// Special case for coins and platinum tokens
+		if (id == ItemID.COINS_995)
+		{
+			return NUMBER_FORMATTER.format(qty) + " gp";
+		}
+		else if (id == ItemID.PLATINUM_TOKEN)
+		{
+			return NUMBER_FORMATTER.format(qty * 1000) + " gp";
+		}
+
+		final ItemComposition itemDef = itemManager.getItemComposition(id);
+		// Only check prices for things with store prices
+		if (itemDef.getPrice() <= 0)
+		{
+			return null;
+		}
+
+		int gePrice = 0;
+		int haPrice = 0;
+
+		if (config.showGEPrice())
+		{
+			final ItemPrice price = itemManager.getItemPriceAsync(id);
+			if (price != null)
+			{
+				gePrice = price.getPrice();
+			}
+		}
+		if (config.showHAValue())
+		{
+			haPrice = Math.round(itemDef.getPrice() * HIGH_ALCHEMY_CONSTANT);
+		}
+
+		if (gePrice > 0 || haPrice > 0)
+		{
+			return stackValueText(qty, gePrice, haPrice);
+		}
+
+		return null;
+	}
+
+	private String stackValueText(int qty, int gePrice, int haValue)
+	{
+		if (qty > 1)
+		{
+			itemStringBuilder.append("(").append(qty).append(") ");
+		}
+		if (gePrice > 0)
+		{
+			itemStringBuilder.append("EX: ")
+				.append(StackFormatter.quantityToStackSize(gePrice * qty))
+				.append(" gp");
+			if (config.showEA() && qty > 1)
+			{
+				itemStringBuilder.append(" (")
+					.append(StackFormatter.quantityToStackSize(gePrice))
+					.append(" ea)");
+			}
+		}
+		if (haValue > 0)
+		{
+			itemStringBuilder.append(gePrice > 0 ? ", " : "")
+				.append("HA: ")
+				.append(StackFormatter.quantityToStackSize(haValue * qty))
+				.append(" gp");
+			if (config.showEA() && qty > 1)
+			{
+				itemStringBuilder.append(" (")
+					.append(StackFormatter.quantityToStackSize(haValue))
+					.append(" ea)");
+			}
+		}
+
+		// Build string and reset builder
+		final String text = itemStringBuilder.toString();
+		itemStringBuilder.setLength(0);
+		return text;
+	}
+}
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesPlugin.java
new file mode 100644
index 0000000000..c83f92a657
--- /dev/null
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/itemprices/ItemPricesPlugin.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2018 Charlie Waters
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.client.plugins.itemprices;
+
+import com.google.inject.Provides;
+import javax.inject.Inject;
+import net.runelite.client.config.ConfigManager;
+import net.runelite.client.plugins.Plugin;
+import net.runelite.client.plugins.PluginDescriptor;
+import net.runelite.client.ui.overlay.Overlay;
+
+@PluginDescriptor(
+	name = "Item Prices",
+	enabledByDefault = false
+)
+public class ItemPricesPlugin extends Plugin
+{
+	@Inject
+	private ItemPricesConfig config;
+	@Inject
+	private ItemPricesOverlay overlay;
+
+	@Provides
+	ItemPricesConfig getConfig(ConfigManager configManager)
+	{
+		return configManager.getConfig(ItemPricesConfig.class);
+	}
+
+	@Override
+	public Overlay getOverlay()
+	{
+		return overlay;
+	}
+}