More realistically, you have to ask yourself why anyone would want to sell you a name they have had and/or been working with for at least two years, for a mere $15, which is essentially less than two years worth of RegFees? Unless someone is looking to take a loss and are wanting to dump a name they would otherwise let expire in the coming weeks or months, it is highly unlikely you will get much response, if any, outside of the aforementioned.
You will probably fare better looking for HandRegs of newly expired names that have at least two years of history behind them, and potentially some associated backlinks. Or, you may try GoDaddy's Closeout Auctions. There you can find the kind of lower-level names you are looking for in the $12-$15 range, sometimes even less.
:imho:
-Regards