It might have a salvaged title on it or something. I've never seen a Si go for that low. Look at it, write down the VIN number, register on
www.clubsi.com and make a post in the "General" forum under the carfax thread. Just make a message that you need info for whatever VIN number is on the Si, and the guy will get it for you and post it up. If it comes out clean, it's definitely a steal!