I recently purchased a new worm bin. I found a good deal on The Worm Factory and 1LB of worms. So I purchased and I started vermicoposting. I have been composting with a free homemade compost bin with about 200 worms.
I am not sure what I want to do with the original bin. The colony is slowly getting bigger and they seem to be getting healthier as well. I think I might hang on to this colony and add more worms to it once my Factory is gets bigger. But as right now, I am just maintaining and checking on them once or twice a week to make sure they have plenty of food and the bedding stays moist enough form them to be happy.