The fact that you'll have all of those listings at your disposal will also empower you to find the best prices on the motorbikes you're considering.
You'll never uncover all of the deals out there and you'll be working with incomplete information if you do.
Why are you beating around the block in that clunker? You could be driving a late model Ducati R600 (Zx600).
Many of the motorcycles are available at very low prices.
Don't buy the first used motorbike that seems like a decent deal.