This is only going to help someone out if read within about 10 minutes of me writing this.

One can buy 3 Easybloom sensors (now known as a Black & Decker PCS10) from Amazon for $60 if ordered before 10 PM Eastern. It has a Black Friday price of $20 for one but if you add two more at the regular price of $25, an additional $10 discount is applied due to another Black & Deck promotion

http://www.amazon.com/gp/product/B003Z4JV8K

Anywho, I bought *one* of these for $50 a year ago and like it.

Here is a link that might be useful: Easybloom sold by Amazon