tz4bu selling three $100 + two $75 voucher is a scammer

this guy name tz4bu is a scammer. he is selling 3 pieces of $100 vouchers and 2 pieces of $75 vouchers for only $30 and then drops to $25 then drops to $20 and now $15. when i tested his voucher INVALID

Here are the screenshots:






Now i have learned my lesson