Thinking about getting a new PC entirely, I got my first from PC Specialist 2 years ago. Was wondering if they do trade-ins at all? Obviously that would really help out with money towards a new PC.
I'm afraid they don't do trade-ins as they would have no use for older PC's.
You could try selling your old one on somewhere like eBay or GumTree though (obviously though 2nd hand PC's only go for a fraction of their initial price)