they are extremely dated bikes, that orange will be from early 2000's and they have such a random mix of parts. The forks on all the bikes are next to useless, the brakes all seem to not work etc. I'd say that Orange was worth around £600-£700, but if you bought it to actually ride you'd need to spend a few hundred more on it.
Decent modern Patriots might go for £2000, but not 10 year old ones with weird forks and parts.