Totally worth it. Easily expandable, easy system for kids to learn role playing. My 8 and 11 year old girls really like it. One suggestion: use lego figurines for the heroes and bad guys, they fit perfectly into the one inch grid and don't fall over all the time like the figurine tents. Or use character tokens form Pathfinder, but Legos are more fun, and then if they really dig it you can buy some Reaper miniatures.
[5 of 5 Stars!]