I saw the site last night, and they do look good, but at $200 ( approx £133) the pair, they are not cheap. Throw in HM Customs import duty at 9% and VAT, it brings them up to the £170 mark. Not to mention the postage of course.
That compares with the standard BMW ones which I believe are round about the £70 mark for the pair. For the price of Stanton ones, you can buy a good set of engine bars.
Bob