Yea, I'm kind of suspicious about the lack of information. I probably wouldn't buy it that for more than $150 (assuming it even fits). You would need the standover height in order to know if the bike actually fits you.
Also, the reason I wouldn't pay $300 for it is because you can get a brand new bike from
Bikes Direct for $300 or $350 if you go with the Kilo TT, which lots of people on the forum seem to like. That's not including the cost of you having to drive three hours round trip to a bike of questionable quality, so yea.