IMHO-
Judging by the amount of reponses hilary gets for road bike equipment and how quickly stuff can sell your userbase must consist of a large number of fixed gear owners who are road(geared) bike users and owners as well.
Even a nominal once payment of £5 pound per advert where the item(s) total more than say 100 pounds is not asking alot really considering how quick stuff sells on here if its priced right.....
Free Ads for items totalling less than £50
£5 pounds upfront for items totalling more than £50
£10 pounds upfront for items totalling more than £500
Free Ads for items totalling less than £50
£5 pounds upfront for items totalling more than £50
£10 pounds upfront for items totalling more than £500