Last time I was at Sur La Table I saw this interesting little herb grower. It uses a hydroponics technique to grow herbs quicker. There is a spray bar which mists the roots with water and nutrients. There is a larger version that looks similar to the AeroGarden, however this compact version looks like it would be perfect for one of our apartment windows.

Has anyone tried this? Does it work and more importantly, is it worth the money? It looks fun, but I am not sure if it would end up just being cheaper to buy herbs in the store. $40 can buy a lot of herbs. I have a credit at Amazon, so I might have to give it a try.