yeah, not a lot. the best thing you can do is reuse them in another build. the 5850 is 2 series old so i wouldn't expect a lot for that. processor will be less than £20. motherboard will probably be the same.
I bought that same proc for 60 bucks a few years back (still using it) that is also a bare bones motherboard currently selling for 40 bucks. The 5850 is going to be the only thing worth not just giving away imo. I would sell the whole set for maybe 130 ish