iv had a look on ebay tonight..no luck. if i were you i would walk around the town abit, hang around a couple of skate parks, dont make it too obliv your looking for it but ask if kids if they know anyone that does trials..maybe that will lead to someone saying they know a kid whos just brought a new bike....could be yours. Check local adds..shop windows, if that was me i would be hunting it down like mad! its got to be close!
good luck dude x
EDIT: even if you put a "reward" picture up , the theif might decide to hand back the bike he stole for a return in abit of "reward money"....