[Hubb777]

So it will be like this?

local addonName, addon = ...
 
local frameName = "ZAMESTOTV_BUY299"
if not _G[frameName] then
    _G[frameName] = CreateFrame("Frame")
    _G[frameName]:RegisterEvent("MERCHANT_SHOW")
end
 
local vendors = {
    ['Arvik'] = {['Skrog Liver Oil'] = true, },
    ['Bukarakikk'] = {['Hunk o\' Blubber'] = true, },
    ['Erugosa'] = {['Exquisite Ohn\'ahran Potato'] = true, ['Flaky Pastry Dough'] = true, ['Dark Thaldraszian Cocoa Powder'] = true, ['Four-Cheese Blend'] = true, },
    ['Gracus'] = {['Greenberry'] = true, ['Fresh Dragon Fruit'] = true, ['Juicy Bushfruit'] = true, ['Dried Coldsnap Sagittate'] = true, },
    ['Hanu'] = {['Eye of Bass'] = true, },
    ['Head Chef Stacks'] = {['Rations: Scorpid Surprise'] = true, ['Rations: Undermine Clam Chowder'] = true, ['Rations: Westfall Stew'] = true, ['Rations: Dragonbreath Chili'] = true, },
    ['Jinkutuk'] = {['Salted Fish Scraps'] = true, },
    ['Junnik'] = {['Thousandbite Piranha Collar'] = true, },
    ['Elder Nappa'] = {['Nappa\'s Famous Tea'] = true, },
    ['Norukk'] = {['Norukk\'s "All-Purpose" Fish Powder'] = true, },
    ['Qariin Dotur'] = {['Seven Spices Bruffalon'] = true, ['Dragonflame Argali'] = true, ['Thrice-Charred Mammoth Ribs'] = true, ['"Volcano" Duck'] = true, },
    ['Patchu'] = {['Lunker Bits'] = true, },
    ['Rokkutuk'] = {['Deepsquid Ink'] = true, },
    ['Tattukiaka'] = {['Fermented Mackerel Paste'] = true, },
    ['Tikukk'] = {['Island Crab Jerky'] = true, },
    ['Tuukanit'] = {['Piping-Hot Orca Milk'] = true, },
}   
 
local function PrintMessage(msg)
    print("[ZAMESTOTV: Community Feast] " .. msg)
end
 
local function BuyItemsFromVendor(vendorName)
    local vendor = vendors[vendorName]
    if not vendor then return end
 
    local numItems = GetMerchantNumItems()
    for i = numItems, 1, -1 do
        local name = GetMerchantItemInfo(i)
        if vendor[name] then
            local success = BuyMerchantItem(i)
            if success then
                PrintMessage("Purchased: " .. name)
            else
                PrintMessage("Failed to purchase: " .. name)
            end
        end
    end
end
 
local frame = _G[frameName]
frame:SetScript("OnEvent", function(self, event, ...)
    if IsShiftKeyDown() then return end
    
    local targetName = UnitName("target")
    if not targetName then return end
    
    BuyItemsFromVendor(targetName)
end)
 
local function AutoPurchaseSelectedItems()
    local targetName = UnitName("target")
    if not targetName then return end
    
    BuyItemsFromVendor(targetName)
end
 
local function OnEvent(self, event, ...)
    if event == "MERCHANT_SHOW" then
        self:RegisterEvent("MERCHANT_UPDATE")
    elseif event == "MERCHANT_UPDATE" then
        self:UnregisterEvent(event)
        AutoPurchaseSelectedItems()
    end
end
 
local eventWatcher = CreateFrame("Frame")
eventWatcher:RegisterEvent("MERCHANT_SHOW")
eventWatcher:SetScript("OnEvent", OnEvent)