Obviously selling hacked or carded accounts or more likely just a scam.  Same guy (or his twin brother) been scamming and spamming around under multiple names scamming the same stuff for years.

Account with $500 gift card balance for $150 .... yea sure.

Very obvious other accounts (and more I'm sure) include:
Dennis2221
Stevehellin
keanuReeves17
Liam Brown
NoxAccounts
Liam012