Just checked, and yes, German-Autowerks [sic] prices are as good as most others, but not as low as AIE's.
On principle, though, I'm not excited about buying from a "we're an Audi shop but sideline in Subaru" shop, and I'm effing annoyed by people who butcher foreign languages because they think it's cute... It's Werke, not Werks! I bet the only thing German about them is the Beck's in their 'fridge.
Anywho, I'll probably buy locally at Turbo Evolution or Upgrade Garage (I'm in L.A.), it's worth an extra $10-$20.- to be able to look the guy in the face and to be able to go back if there's a problem. Tony at Turbo Evo's already answered my e-mails, his prices are decent, and he comes highly recommended.