Mountain Buggy Duet - excellent condition ?

Bought this buggy in Nov 2011 for 550 and have used it for 5 months. Eldest child wants to walk everywhere now so have no use for it. The narrowest double buggy on the market, and it fits through standard Victorian terraced house front door without having to collapse it everytime. Look on Mountain Buggy website for specific product details, but I used this from the birth of my 2nd child. It lies flat for the baby and the other child can sit-up or lie down and sleep etc. My actual buggy is in very good condition. It is obviously used, but I have alot of prams and I look after them really really well. There are no marks on the seats, handlebars etc and you would only know its been used by looking at the wheels - you cant avoid scuffing them whilst walking the streets of London!