I just ordered from Brewmasters Warehouse. They have a cool application on their site that allowws you to build your recipe and then place it in your cart. What's nice is that you can order just what you need, so if you only need .25 lbs of Black Patent, you don't have to buy a pound. Flat rate shipping and if you listen to The Brewing Network, there's a 10% discount code.
They are very customer oriented. They actually called me the other day because they had a question about my order. They could have easily sent an email, but I give them props for wanting the interaction with the customer.
I buy my hops from Nikobrew.com ( also with a Brewing Network discount ) who sells by the ounce, pound ( 1, 5, & 11 ).