I bought it and I'm hooked. It's very simple, but it's easy and quick to play. Also, it can get quite difficult at times! It's cheap and I think it's worth the money. If only because it's made in Java and therefor plays on every single platform I own (and one I decline to use). Want some RTS fun? Try Tribal Trouble. They got a free demo, too!
Tribal Trouble - Humorous realtime strategy game from Oddlabs