Yes, it appears that Amazon does indeed sell Swarovski HotFix crystals. The price, however, will depend on what exactly you are looking for in your crystals.
Swarovski hot-fix crystals are good quality. They are great for rings and necklaces. Miss Diamante sells these crystals to high chain stores and other outlets.
Youtube provides a number of how-to videos, and Ebay sells a few books on the subjecct. Many arts and crafts stores will probably be able to give you information on them and maybe even help you with...