Should I buy this? Is there a risk with second hand?

http://www.preloved.co.uk/adverts/show/110080728/low-cost-gaming-tower-reduced-for-quick-sale.html just to clarify, this comes with the charger and 4gb of ram is enough for gaming, could this handle battlefield? What fps would it get on minecraft aswell? Thanks I need an answer quick tough thanks a lot all help is appreciated no matter how significant.

Added (1). How well can it run battlefield? Fps on those settings?

Seeing as it says custom built, unless it was custom built by a company, and not someone in their home, I wouldn't get it. If something is wrong when you do get it then they can say it was fine when they had it. Common fraud trap. Be careful. But, to answer another question, yes, it could handle Battlefield.

Could be a risk, but theyll deliver so have them deliver and setup, no money until you see it working.