ok heres a basic thing to buy a gun with VCE. If you do not have VCE thenk Download it.
OnActivate > Self > VCERetroCheck [IfPlayerScore] <= 150
OnVariableTrue > Player > AddItem > [ENTER WEAPON HERE]
OnVariableFalse > Client > <color:ffffff> You do not have enough for this gun.
hope this helped >.<