I bought some from theroachranch.com the prices were average, but the two day shipping is free on $30 or more orders! I live in California and it's on the east coast and it was still here in two days.
Just an FYI, I have many tarantulas and they love dubias more than chameleons. I learned a long time ago that many of the places on this forum charge way too much for dubias and other feeders for that matter. As a member on a tarantula forum, I have found a connection for dubias that blows away the sponsors here. I order 200 and get 400. My connection charges a fraction of the cost. PM me and I will give you his info.