[Don_Cage]

Check for

pawn Код:

OfferMatsPrice

You can do it like this

pawn Код:

GivePlayerMoney(playerid, amount*X) 
PlayerInfo[playerid][pMats] -= amount;

Example: GivePlayerMoney(playerid, ammount*10)
will give ammount of mats x 10 which means if you /sellmats 10 you get 100$