Purchase prompt showing the correct item, but item given seems to be random?

I have 4 item in my developer item store right now. In game, when I click the store button the GUI pops up and everything looks fine. When I click an item the purchase prompt shows up with the correct item, but when I confirm purchase I seem to get a random item from the store.

local Market = game:GetService("MarketplaceService")
local ServerStorage = game:GetService("ServerStorage")
local players = game:GetService("Players")

local id = 1194047963

local function processReceipt2k(receiptInfo)

    local player = players:GetPlayerByUserId(receiptInfo.PlayerId)
    print(player.Name)
    if not player then
        return Enum.ProductPurchaseDecision.NotProcessedYet
    end

    if player then
        player.leaderstats.Cash.Value += 2500
        print("player received 2500 Cash")
    end

    return Enum.ProductPurchaseDecision.PurchaseGranted
end

Market.ProcessReceipt = processReceipt2k

This is the server script that gives the player cash when the purchase is processed.

local Market = game:GetService("MarketplaceService")
local ServerStorage = game:GetService("ServerStorage")
local players = game:GetService("Players")

local id = 1194049240

local function processReceipt10k(receiptInfo)

    local player = players:GetPlayerByUserId(receiptInfo.PlayerId)
    print(player.Name)
    if not player then
        return Enum.ProductPurchaseDecision.NotProcessedYet
    end

    if player then
        player.leaderstats.Cash.Value += 10000
        print("player received 10000 Cash")
    end

    return Enum.ProductPurchaseDecision.PurchaseGranted
end

Market.ProcessReceipt = processReceipt10k

Here is another server script that processes a different item in the store. There is almost nothing different about these scripts, why does it keep giving me a random item?

Edit: it's also worth noting that once I purchase the first time, if I click confirm purchase again, that first random item will be given every time.

Example: Player joined
        *buys 10,000*
        Console prints: Player bought 2500
        *buys 10,000*
        Console prints: Player bought 2500
        *buys 10,000*
        Console prints: Player bought 2500