George Stock (NZ-wide) sells new Stabilus items for a lot cheaper than BMW. I think I paid $80 for two instead of $118 each for "BMW" stamped Stabilus replacements. Mind you this is for an E24, which are generally more expensive for everything. I can now use my bonnet as a catapult!
For more of the same go to http://www.tornadoair.com/ the ads are very funny. These things pop up every time fuels prices go up( go figure). I especially like the bit where it'll reduce a 75mm intake down to 65mm. Brilliant! I'll take two. In all seriousness it is a scam.