I purchased one from a catalog.
I don't have it completely up yet but when i do get it ready i will keep you posted:)
I'm kind of slow at putting things together:D
If you really want to save money on food
I suggest the earthboxes if you have the room. It is amazing how many plants one needs to make a real dent in a food bill. Two places to get thme are:
www.agardenpath.com and http://www.earthboxresearch.com/
AGardenPath is a little cheaper. I prefer the earthboxresearch one because they have one piece contruction and a watering system I can buy to automatically fill up the boxes. I can also drive to the company here in Florida and save on postage.