Sell them on eBay, you'll get far more for them than trading them.
Also if you are in the market for new equipment then try http://www.adverts.hififorsale.com/public.asp?offset=412, I've picked up a Linn Classik for £375 inc leads, and an Arcam DV79 plus Van Den Hul cable for £260 recently through this, about half the price of eBay.
It means hifi costs you nothing, keep it for a couple of years, sell on eBay, buy elsewhere and I guarantee that within 3 years you will have a £10k system and it will have cost you nothing comparatively.
I now have Arcam CD92T, A85, P85, T61, DV79 and lots of good leads inc IXOS, VdH, Russ Andrews, Merlin, QED, Dali Ikon 6 speakers and it's cost me about £1,500 all-in. I could sell it for more than this now. Not that I'd want to as the sound quality is just amazing. I had Arcam 7 stuff before which was poor in comparison.