Finally got this on Friday. It's neat. Price is a bit steep, but after fiddling with it first hand, it's obvious that a great deal of thought went into this set. Review coming once I tend to other people's stuff first.
Where did you get it? I tried to get one off toyspark on ebay, clicked buy it now, requested invoice, never heard from them. Kept sending emails, no joy, the option to pay has disappeared now for some reason. Worth the money?
I got mine today from Big Bad Toy Store .com, I am pretty impressed with the quality of this upgrade kit, although I agree that it is a bit pricey, but I am thoroughly happy with the way Superion looks now.