Where can i buy the Accurite Therm/Hydgro Mod?

I can not find these anywhere locally. I am really trying to keep away from purchasing over the internet, but all I know is that the walmart in my area does not carry them anymore.:mad:

last time i ordered one from ebay.. cost me 12$ with shipping...

I WANT ONE I purchased 4 therm/hums for my tubs and the hum never has a reading so it was a complete waste of money