OH.... I opend the link before I finished reading. so your bike was a 10spd but a single speed now. we really need to see pics of the bike. it could be worht $50 or $150 no way to tell.
now that Olmo you linked to, which is my size, could be a real pricy bike and I am afraid to ask the seller how he wants.
I almost forgot WELCOME to the forums. we will gladly help you in any way we can. take a good pic (outside if possible) of the whole bike, then close ups of the dropouts and forkends, the seatlug and the head tube and luggs.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk