For the budget minded try two sites.
Motorcycle & Leather Clothing Store - Motorcycle Jackets, Helmets, Biker Boots, Leather Pants & Chaps provides super discounted prices on a number of lines. You do get what you pay for, and more, but don't expect to match the quality and attention to detail of the premium lines . I will say, with that in mind, I get their premium items and have always been happy. I'm just now replacing the first pair of chaps, which weren't the "premium" side of their lines and that I messed up, with some from the next suggestion.
Motorcycler Leather Biz - Premium Motorcycle Leathers, Riding Gear and Biker Appare is a step above leatherup in most cases. At least from the website items and picutres of their stuff. So far I am really impressed with their customer service. I ordered one of their packages on the net last night and this morning recieved a call from the owner saying he was sorry but the jacket, in my, ah, larger size, was out of stock for 6 weeks. I told him to continue with the vest and chaps and to let me know when the jacket came in. He said he would make me a great deal. We talked about leather quality and biker clothing for a few minutes before I had to get back to work. Anyway, I thought it was nice of him to call, and if the quality of his stuff is as good as the quality of his customer service, he'll get to my favorites section.