no what i mean is there must be an book or site to give an idea of what price! as when i went into ride on they had a wee book n looked up make n model and year n it told the various prices for the bike depending on condition
I normally just look in the classified ads, Gumtree or even ebay and see what the average price is then base my own price on how mine compares to those in the ads.
RideOn Glasgow sometimes live on a different planet with their prices i found. £45 for an Agility belt for example when i got the same belt from Germany for £12. A few folk on here got decent trade-in prices tho in the past from them.
Theres loads of free bike valuation guides online, just search google, do a few and you will get an average value.