Don't know if these will fit your price range, but, via google:
Spicer:
http://www.spicercycles.com/index.cg...cat_desc=Track
Airbourne (ugly and too expensive):
http://www.airborne.net/eready/janette/store/sobike.asp
Previous bike forums thread:
http://www.bikeforums.net/archive/index.php/t-65854
I don't think you'll find a complete bike for $1500.00. Maybe over time you could build one up via ebay.