Aristocrats won't come cheap, they are rather rare, and sought after. For less expensive razors you should search for superspeeds or sometimes adjustables.
I would note the offers already posted here for $20 include the shipping which Ebay would most likely not. It might prove difficult to get a razor in decent shape for $15 on Ebay with shipping.
Just my .02, and best of luck.
[FONT="Book Antiqua"]What strikes me is the fact that in our society, art has become something which is only related to objects, and not to individuals, or to life.