I got these a while ago but at $78USD with free shipping, they're a little cheaper than Shockwarehouse at $87USD. It's still $14 in your pocket.
See my other post in the eBay section for an even better deal on the front struts.
Amazon.com: Bilstein 24-267021 B8 5100 Shock Absorber B8 5100 Shock Absorber: Automotive
Buy Bilstein 24-267021 B8 5100 Shock Absorber B8 5100 Shock Absorber: Triple Shock Kits - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
See my other post in the eBay section for an even better deal on the front struts.