I broke up my Roadrat, here are some of the remaining parts. I do also have the Truvativ Elita crankset and a 12-25 105 cassette to match them if interested, just haven't checked them over or cleaned them up yet so let me know if you're interested in the lot.
These are 105 ST-5600, 10-speed. Lightly used, I never really took to drop bars. They do have some minor marks on the outside, I think just from being bumped against walls, but they're in perfect working order. £80 posted seems to be the going rate for these.
Rear mech- RD-5700 so slightly more recent, chose this to let me run an 11-28 cassette but if it's covered 100 miles I'd be amazed. Other than a little dirt it's almost like new. £25 posted.
Front mech- I think this is an FD-5600. 28.6mm, again in very nice condition and few miles- just a few more than the rear. Probably not much point in posting this by itself so will do it for £5 extra if you buy any of the others.
Or, if you want the lot, let's call it £100 posted.