diff --git a/mods/vendor-values-runtime.lua b/mods/vendor-values-runtime.lua
new file mode 100644
index 0000000..eb78c3c
--- /dev/null
+++ b/mods/vendor-values-runtime.lua
@@ -0,0 +1,220 @@
+local T = ShaguTweaks.T
+local GetItemLinkByName = ShaguTweaks.GetItemLinkByName
+local GetItemIDFromLink = ShaguTweaks.GetItemIDFromLink
+
+-- Runtime replacement for Vendor Values.
+-- vendor-values.lua still owns the sell-price database and exports it as
+-- ShaguTweaks.SellValueDB. Registering the same module title here replaces only
+-- the old tooltip runtime without duplicating the large database.
+local module = ShaguTweaks:register({
+  title = T["Vendor Values"],
+  description = T["Shows the vendor sell values on all item tooltips."],
+  expansions = { ["vanilla"] = true },
+  category = T["Tooltip & Items"],
+  enabled = true,
+})
+
+local function AddVendorPrices(frame, id, count)
+  local price = id and ShaguTweaks.SellValueDB and ShaguTweaks.SellValueDB[id]
+  count = math.max(tonumber(count) or 1, 1)
+
+  if price and price > 0 then
+    SetTooltipMoney(frame, price * count)
+    frame:Show()
+  end
+end
+
+local function AddVendorPriceFromLink(frame, link, count, ignoreMerchant)
+  if not link then return end
+  if not ignoreMerchant and MerchantFrame:IsShown() then return end
+
+  local itemID = GetItemIDFromLink(link)
+  if itemID then
+    AddVendorPrices(frame, itemID, count)
+  end
+end
+
+module.enable = function(self)
+  -- Some native tooltip setters call SetHyperlink internally. Track nesting so
+  -- each item gets exactly one vendor-price line.
+  local setterDepth = 0
+
+  local HookSetHyperlink = GameTooltip.SetHyperlink
+  function GameTooltip.SetHyperlink(self, link)
+    local result = HookSetHyperlink(self, link)
+    if setterDepth == 0 then
+      AddVendorPriceFromLink(self, link, 1, true)
+    end
+    return result
+  end
+
+  local HookSetItemRef = SetItemRef
+  SetItemRef = function(link, text, button)
+    local itemID = GetItemIDFromLink(link)
+    local result = HookSetItemRef(link, text, button)
+    if not IsAltKeyDown() and not IsShiftKeyDown() and not IsControlKeyDown() and itemID then
+      AddVendorPrices(ItemRefTooltip, itemID, 1)
+    end
+    return result
+  end
+
+  local HookSetBagItem = GameTooltip.SetBagItem
+  function GameTooltip.SetBagItem(self, container, slot)
+    local itemLink = GetContainerItemLink(container, slot)
+    local _, itemCount = GetContainerItemInfo(container, slot)
+    setterDepth = setterDepth + 1
+    local result = HookSetBagItem(self, container, slot)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, itemCount, false)
+    return result
+  end
+
+  local HookSetQuestLogItem = GameTooltip.SetQuestLogItem
+  function GameTooltip.SetQuestLogItem(self, itemType, index)
+    local itemLink = GetQuestLogItemLink(itemType, index)
+    setterDepth = setterDepth + 1
+    local result = HookSetQuestLogItem(self, itemType, index)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetQuestItem = GameTooltip.SetQuestItem
+  function GameTooltip.SetQuestItem(self, itemType, index)
+    local itemLink = GetQuestItemLink(itemType, index)
+    setterDepth = setterDepth + 1
+    local result = HookSetQuestItem(self, itemType, index)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetLootItem = GameTooltip.SetLootItem
+  function GameTooltip.SetLootItem(self, slot)
+    local itemLink = GetLootSlotLink(slot)
+    setterDepth = setterDepth + 1
+    local result = HookSetLootItem(self, slot)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetInboxItem = GameTooltip.SetInboxItem
+  function GameTooltip.SetInboxItem(self, mailID, attachmentIndex)
+    local itemName, _, itemCount = GetInboxItem(mailID, attachmentIndex)
+    local itemLink = itemName and GetItemLinkByName(itemName)
+    setterDepth = setterDepth + 1
+    local result = HookSetInboxItem(self, mailID, attachmentIndex)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, itemCount, true)
+    return result
+  end
+
+  local HookSetInventoryItem = GameTooltip.SetInventoryItem
+  function GameTooltip.SetInventoryItem(self, unit, slot)
+    local itemLink = GetInventoryItemLink(unit, slot)
+    setterDepth = setterDepth + 1
+    local result = HookSetInventoryItem(self, unit, slot)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetLootRollItem = GameTooltip.SetLootRollItem
+  function GameTooltip.SetLootRollItem(self, id)
+    local itemLink = GetLootRollItemLink(id)
+    setterDepth = setterDepth + 1
+    local result = HookSetLootRollItem(self, id)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetMerchantItem = GameTooltip.SetMerchantItem
+  function GameTooltip.SetMerchantItem(self, merchantIndex)
+    local itemLink = GetMerchantItemLink(merchantIndex)
+    setterDepth = setterDepth + 1
+    local result = HookSetMerchantItem(self, merchantIndex)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, false)
+    return result
+  end
+
+  local HookSetCraftItem = GameTooltip.SetCraftItem
+  function GameTooltip.SetCraftItem(self, skill, slot)
+    local itemLink = GetCraftReagentItemLink(skill, slot)
+    setterDepth = setterDepth + 1
+    local result = HookSetCraftItem(self, skill, slot)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetCraftSpell = GameTooltip.SetCraftSpell
+  function GameTooltip.SetCraftSpell(self, slot)
+    local itemLink = GetCraftItemLink(slot)
+    setterDepth = setterDepth + 1
+    local result = HookSetCraftSpell(self, slot)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetTradeSkillItem = GameTooltip.SetTradeSkillItem
+  function GameTooltip.SetTradeSkillItem(self, skillIndex, reagentIndex)
+    local itemLink
+    if reagentIndex then
+      itemLink = GetTradeSkillReagentItemLink(skillIndex, reagentIndex)
+    else
+      itemLink = GetTradeSkillItemLink(skillIndex)
+    end
+
+    setterDepth = setterDepth + 1
+    local result = HookSetTradeSkillItem(self, skillIndex, reagentIndex)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetAuctionItem = GameTooltip.SetAuctionItem
+  function GameTooltip.SetAuctionItem(self, atype, index)
+    local _, _, itemCount = GetAuctionItemInfo(atype, index)
+    local itemLink = GetAuctionItemLink(atype, index)
+    setterDepth = setterDepth + 1
+    local result = HookSetAuctionItem(self, atype, index)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, itemCount, true)
+    return result
+  end
+
+  local HookSetAuctionSellItem = GameTooltip.SetAuctionSellItem
+  function GameTooltip.SetAuctionSellItem(self)
+    local itemName, _, itemCount = GetAuctionSellItemInfo()
+    local itemLink = itemName and GetItemLinkByName(itemName)
+    setterDepth = setterDepth + 1
+    local result = HookSetAuctionSellItem(self)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, itemCount, true)
+    return result
+  end
+
+  local HookSetTradePlayerItem = GameTooltip.SetTradePlayerItem
+  function GameTooltip.SetTradePlayerItem(self, index)
+    local itemLink = GetTradePlayerItemLink(index)
+    setterDepth = setterDepth + 1
+    local result = HookSetTradePlayerItem(self, index)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+
+  local HookSetTradeTargetItem = GameTooltip.SetTradeTargetItem
+  function GameTooltip.SetTradeTargetItem(self, index)
+    local itemLink = GetTradeTargetItemLink(index)
+    setterDepth = setterDepth + 1
+    local result = HookSetTradeTargetItem(self, index)
+    setterDepth = setterDepth - 1
+    AddVendorPriceFromLink(self, itemLink, 1, true)
+    return result
+  end
+end