I second the craigslist. I've seen the best prices there, and they're local.
BUT, you'll not get a sportbike for $1500. Try for a parallel twin, mid 80s, air cooled. Everybody made them, and you can still get parts.
Honda CM400, Suzuki GS400/450, Kawi LTD305/454, etc.
Be prepared to put on tires, or chain/sprockets, or battery, or carb work, or something else.
Clean, old bikes do pop up, but you've got to grab them.
BUT, you'll not get a sportbike for $1500. Try for a parallel twin, mid 80s, air cooled. Everybody made them, and you can still get parts.
Honda CM400, Suzuki GS400/450, Kawi LTD305/454, etc.
Be prepared to put on tires, or chain/sprockets, or battery, or carb work, or something else.
Clean, old bikes do pop up, but you've got to grab them.