Surly Steamroller owners...

I want to sell my steamroller f + f but I have no idea how old it is or how much its worth now... Its a grey paintjob, a bit chipped and one small ding on the downtube. Been riding it for 18 months. Any ideas?

One sold on here for £125 very recently.
I'd give you that depending on size and how big that ding is if you're serious about selling.
I'm after a 56 I think (I ride 56 road bikes, but I know the geo is slightly different).