I went in 2009 and ROTF figures were new In japan. transformers wise it was a bit dull, but the atmosphere and the whole set up was pretty cool! I would go again, just walking through some of the themed areas was fun, like the Power rnager section. i don't mind power rangers, but don't love them, but the way that part was set up, it was so much fun! Much like Bandai and their gundam area.
However, I have noticed Tokyo toy fair toys always sell really fast. And scalpers certainly suck.