What's your point?
You didn't sell them at £270 on here > viewtopic.php?f=2&t=272724
So you ebayed them here > http://www.ebay.co.uk/itm/Mavic-231-cd- ... 1292021647
and they 'only' made £80? Few points
-The auction title is poor. Someone else sold a similar set of wheels with far better description for £50 more > http://www.ebay.co.uk/itm/Shimano-Deore ... 2c7376cdab
. More images and a better description would deffo have helped.
-That is the way it goes with any auction, anywhere. If you don't want to let them go for less than £x set the reserve to £x.
-eBay are up front about their fees, assume you knew this before the auction.
Finally in your advert on here you set out the rims and hubs are NOS. You have ridden them, ergo in my book they are not NOS. I'm not even sure I'd call a rim NOS if built but that's probably splitting hairs...