Cost of my bucket with soil, lime, buckets, pipe, and plant, $12. Plus I have enough soil for another bucket and pipe for 4 more buckets. . EarthBox. $60 plus shipping.
. I am getting more buckets from work as well.
I found this one a few moments ago
cited the global bucket page but instead of two buckets they use one and its lid. I like this idea as well. Saves a bucket!
http://vermicomposters.ning.com/profiles/blogs/test-earth-box-global-bucket
If you want to spruce them up a bit, just make a nice planters box and stick the buckets in them.