Found a JCW I want to buy looking for advice

[gilliambot]

I need some help. im looking for a cooper S or JCW as a daily run around. I found a great looking JCW cooper S through a dealer it's from 2004 with 50,000 miles on the clock. It's on at £6,500. Now, I put the price into what car valuation thing and it came up with circa £3000. Who do I believe? The car has full dealer device history and all the right signs of a well maintained vehicle, but I am no mechanic so are There issues I should look out for? All tips and advice would be greatly appreciated.

Cheers.