If it's in good shape and everything is working, I'd buy a system like that for 300 but that probably the max I would spend on it. $300 is a fair price for a system with that smaller SSD but it's not what I would call a good deal considering that video card is a few years old and was mid range when new, and a 256ssd in a "gaming" system is a bit small, with the system likely out of warranty.