Just a note, i wouldn't quote the prices on thomann before you look at a UK shop because the pound is so weak compared to the euro now, so their prices for us are sky high, and don't order anything from there! Just a heads up like
FWIW, i think £550 is an ok price if it's in good nick. I've never played one myself though, so i don't know what they're like, though i would like to.