Agreed. This would have been an entry level gaming system (just barely) almost a decade ago. The Q6600 processor was introduced in the first quarter of 2007. The Geforce GT210 is little more than an on-board graphics replacement released around 2009. It would perform no better than any on-board graphics chipset from around 2010/11 (five years ago). Any claim that it can play modern games at decent frame rates should be taken with a grain of salt if not an outright lie.
Additionally, the seller states the front of the case does not close. This actually inhibits the case's designed airflow and limits cooling rather than enhancing it as the seller claims.
Finally, while the seller does state the system comes with Windows 10, I'd want to...