So, there are a few things wrong here.
1. DayZ is available on G2A
for about 26 bucks.
2. There's no guarantee that when somebody buys this, that you won't suddenly tell valve support that your account has been hijacked, you provide valve with details from a previous purchase, and hey presto, account is back in your possession.
3. There's no evidence that the dayz account on this hasn't been banned.
All in all, not a lot of reasons any sensible person would buy this.
