That's ripoff Britain for you! I paid £8 (about $13) for R2000 at a local Vauxhall dealer where it's almost exclusively sold in the UK. It's made in Germany, shipped to the US and still costs less than it does here.
OK rant over, it was good stuff but I felt a bit pricey compared with my usual fave for wheels, APC+ @ 3:1. On heavily soiled wheels it did work real nice but I think that was down to its gel formula as opposed to the actual cleaning properties. Once I fitted my APC spray bottle with a foaming head this worked just as well for me although the R2000 does stick to the wheel longer, making it IMO a very good product indeed for very dirty wheels.
Price is my only objection to the product