Bought this for the my 4 year old son who is a massive Star Wars / Clone Wars fan as well as my daughter (7) who just loves gadets. I gotta say they love it to bits. Watching the concentration on their faces as the ball moves and then seeing the joy when they open their eyes means its worth every penny.
We recently had an a gathering of family and friends and I produced the trainer which everyone had a laugh and go of so it's also a great party gadget. It's up there with Buzz and Guitar Hero for family fun.
Not sure of the lastability but I can see it still been used by our younger members of the family when they get older so it will be in my family for a long long time (major Star Wars fan here).
Great buy!