[Donny_k]

pawn Код:

new Menu:CurrentMenu = GetPlayerMenu(playerid);

That should be in the "OnPlayerSelectedMenuRow" callback ^^.

pawn Код:

GivePlayerMoney(playerid, -750);
      else
            {
            SendClientMessage(playerid, 0xFFFFFFFF, "You don't have enough money for this item!");
    }

"else" to what, you have no other statement. Get rid of all these lines:

pawn Код:

else
            {
            SendClientMessage(playerid, 0xFFFFFFFF, "You don't have enough money for this item!");

Then after the last case (6) put this:

pawn Код:

default : SendClientMessage(playerid, 0xFFFFFFFF, "You don't have enough money for this item!");

The above line is for anything which isn't a listed case (anything not 0 to 6), if you need more info about switch statements then consult the Wiki or Pawn_Lang.pdf.