It's a beautiful instrument / toy. The boys enjoy it, and it would probably be more fun to have two -- so the boys could both drum at the same time. I don't know much about drumming circles but it looks like something fun to explore when the kids get a little older.
The drum is available from Amazon as well as other online music stores. If you shop, you may want to do a Google shopping search to see where the best prices currently are. We bought ours from a store called Same Day Music, but I've heard of good deals on Remo appearing now and then at various stores.