You really do get a lot more out of your system by adding two of these clocks to your system, $125 each sounds like its way way over priced but only because you never tried it and you really do not know how good this product really is. This is one of those products that you really have to try to be believed. If I had not tried this product for myself I would still be saying they were all nuts and crazy! You get two batteries with each clock, each battery will last for 5 years. I really do not think your be saying they are way over priced and do not do anything after you see and hear it for yourselves what this product can do!