yup.. here's what I found.. at this url www.xtremeimportz.com/POWERIZER_PRO.html
looks like well worth $80 more.....
The Two best things about the Powerizer Pro is the Moving foot plate and the Carbon Fibre Spring. The footplate is made out of light weight aluminium reducing the weight by 400grams and it will have an axle that will hinge up and down. (See picture below) This will allow the foot plate and the Bockers foot to flex and extend while in motion, this will give the Bocker a natural feel while jumping and running. This will allow for a more natural movement and take pressure off of the hips and low back. The Carbon Fibre Spring is exclusive only to the Powerizer brand, The new Carbon Fibre springs are 30% stronger than the original Fibre glass springs as well as being lighter. This is a huge benefit and improvement over the original Powerizers. The Powerizer Carbon Fibre spring is the strongest spring on the market guaranteed. Powerizer Pro also uses a sealed bearing instead of a bushing like the original Powerizer for smoother Bocking, less noise and less resistance. These new bearings last way longer than the others as well.

The Foot rubber can easily be replaced instead of having to replace the whole bottom metal piece, saving you time and money. The straps are stronger and easier to strap into, instead of being made of plastic, they are now made of tough nylon strapping.

Well, it's a product. You can legally resell things in the US. Granted, if they are claiming to be authorized dealers that's not cool, but there isn't anything illegal selling powerizers.

Extremeimportz.com is not an illegal seller of PoweriZers. I know the guy that runs the site from another powerising community he is legit.