I found a good commercial link for Elxiers. They have some good info on how they are made, why their different and what their froends say about 'em. It is commercial, but you can judge for yourself.

They sell 'em on-line for just under $15. Soif you buy a few sets at one time, add your shipping charge your still gettig a good price (for Elixers, that is).

The link is here.