Are there any stores that will sell you a kit for detirmining your blood type?

Do any stores like pharmacies or Wal-Mart or something sell kits to detirmine your blood type that you could get fairly easily and cheap? Getting blood type tested at red cross is a bad idea cuz where I live if they find out you have a rare blood type they will call you every other week asking for donations.

Here's are two online:
http://www.4yourtype.com/prodinfo.asp?number=TE001
http://www.thinkgeek.com/geektoys/science/8f3d/

You can tell Red Cross they don't have permission to call you, and they are legally-bound to respect that. I actually like being a rare type with other rare special stuff because I feel like I'm helping people who really, really need it. Besides, if I ever need it, I'd hope someone was out there wanting to be generous, too.