[Flake.]

like this?

pawn Код:

CMD:trade(playerid, params[])
{
    if(!IsPlayerInRangeOfPoint(playerid,20.0,-103.9105,-22.3268,1000.7188))
    {
        SendClientMessageEx(playerid, COLOR_GRAD2, "   You are not at the Cookie shop!");
        return 1;
    }
    ShowPlayerDialog(playerid, SHOPMENU, DIALOG_STYLE_LIST, "Cookie Shop", "Neon        50\nWeapon set      10\n    $500", "Buy", "Cancel");
    return 1;
}

then:

pawn Код:

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    if(dialogid == SHOPMENU)
    {
       //add your stuff here
        return 1;
    }
    return 0;
}