I bought some ski boots for DS2 last year for about £10 on eBay. Even then they were scratched and rather tatty (although fully functional)
They're now outgrown and I cleaned them up, and have just sold them on ebay for over £25
I was very honest - said they were well-scratched, and one buckle was slightly broken etc.
However the photo was perhaps on the 'favourable' side in retrospect...
I'm sure the buyer will come back and complain, so now I'm waiting with baited breath!
You can buy new ones for about £30!