[UK] Ford Focus 2008 ST2 or ST3 Information

Hi so I'm trying to find some up to date information on the 2008 Ford Focus ST2 (preferably an ST3) but everything online is from 2008-2010. I just have a few questions like do the cars typically still run well even though they're 8 years old at this point? Are they worth the £8,000-£10,000 price tag? Do they cost a lot in terms of upkeep and to run? Any information would be really helpful thanks