How do I allow players to save their in game purchases they buy with the in game currency?

How do I allow players to save their in game purchases they buy with the in game currency.

My Code for purchasing an item with in game currency (cash)

local plr = game.Players.LocalPlayer
local replicatedstorage = game:GetService("ReplicatedStorage")

script.Parent.MouseButton1Click:connect(function()
    if plr.Backpack:FindFirstChild("GravityCoil") or plr.StarterGear:FindFirstChild("GravityCoil") or game.Workspace[plr.Name]:FindFirstChild("GravityCoil") then
        script.Parent.Parent.TextLabel.Text = "You have already bought this item!"
        wait(3)
        script.Parent.Parent.TextLabel.Text = "SHOP"
        else

    if plr.leaderstats.Cash.Value >= 500000 then
        replicatedstorage.GravityCoil:Clone().Parent = plr.Backpack
        replicatedstorage.GravityCoil:Clone().Parent = plr.StarterGear
    else
    local cashrequired = 500000 - plr.leaderstats.Cash.Value
    script.Parent.Parent.TextLabel.Text = "You need "..cashrequired.." more money to buy this item"
    wait(3)
    script.Parent.Parent.TextLabel.Text = "SHOP"
    end

    end



end)

I made this code to save the cash a player has in my game and it works. How would I use it to also save the in game purchases of a player.

My Purchasable Items are in replicatedstorage.

How would I make sure that the player can keep their purchase so they when they rejoin the game they still have the gear they purchased with in game currency.

CashStore = game:GetService("DataStoreService"):GetDataStore("DataStore")

function PlayerEntered(player)
    repeat wait() until player.Character

    local stats = Instance.new("IntValue")
    stats.Parent = player
    stats.Name = "leaderstats"

    local cash = Instance.new("IntValue")
    cash.Parent = stats
    cash.Name = "Cash"

    if CashStore:GetAsync("Points_"..player.Name) ~= nil then
        cash.Value = CashStore:GetAsync("Points_"..player.Name)
    else
        cash.Value = 0
    end

    cash.Changed:connect(function(Val)
        CashStore:SetAsync("Points_"..player.Name, Val)
    end)
end

game.Players.PlayerAdded:connect(PlayerEntered)

Thank You and help is appreciated