I've wanted to do one of these Gundam kits since Iw as about 14 years old. But let's be honest, no 14 year old is gonna have the cash handy to make a habit out of these things. I can happily say when I finally got around to indulging in one, it was a long, long time before the grin faded from my face after I'd completed the final product.
One thing to be aware of though, the instructions are all in japanese and, while the pictures are easy to understand, I did manage to miss putting a sticker on first under a clear piece as I was unfamiliar with how the diagrams work.