This was not expensive at all - about $10.
I plan to check the finish of the wheel from time to time...i have used a similar one on my wife's Elantra's wheel and it didn't do anything to the finish, BUT i am also skeptical and will watch out to see if what happens.
I know that wheelskins covers are good - I just don't like the wrinkly look they have no matter how perfect one tries to get the stitching...