Most of the knives listed on amazon - the bucks, spydercos, etc, can be gotten cheaper on ebay. I have probably purchased 40 knives and multi-tools on ebay (mostly as gifts) with great savings and only once have had trouble with a vendor.
Also, go here to cabelas "bargain cave" for low cost knives. There are some good buck folders on sale.

http://www.cabelas.com/cabelas/en/common...e&noImage=0