CML's shopatron has helped me find some obscure vintage AE parts that I'd really struggle to find in the UK otherwise.
On a couple of occasions, the parts have come from tiny little shops in small towns - which is very good in my books. The small vendor gets the business, and I get introduced to vendors that have stockpiles of old NOS bits that I need. It's win win in that regard.
Cheers,
Ty