Yeah they are very nice. That guy is expensive, more than I see them on eBay for.
My dream would be a Colnago track frame, but I think my wife would leave me if I spent that much for one! In general, the geometry of the Italian track frames look much racier and with steeper angles than these Keirin bikes have.
I'll be keeping my eyes open for an Italian frame if I go the vintage route. If I go modern, it won't matter much...
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It never gets easier, you just go faster. ~ Greg LeMond