The cheapest thing is this: wait for Jordan Sparks to open his cryonics non-profit. He was planning to offer a $10,000 human cryopreservation.
As for "different chemicals," people are working on discovering new ones.
IMO Canadian summers aren't cold enough even in yellowknife. And chemical preservations kill every cell. (I've yet to hear someone explain how these cells would be revived.)
This message has been edited by Edward-M on Sep 23, 2008 8:20 PM