I have a great Performance store near me where the guys behave more like an LBS than the real and snooty LBS's in Scottsdale. I buy their better clothing on sale.

Shorts -- I want to try bibs
Basic tights
Plain jerseys and base layer -- wicking material. Sorry, no cotton. A cotton T-shirt can soak up to 3 lbs of sweat. Doesn't that sound pleasant and a formula for for hypothermia.
Socks -- out of our common sock basket -- I have two teenage boys.
Windbreaker
Gloves -- been using mid weight lifting gloves lately -- cheap at Sports Chalet and better than most cycling specific gloves.
Sidi Genus shoes -- I splurged here, but learned long ago about the importance of quality athletic footwear.