EricB--Good advice from Alaskan Swamp Collies and GoldenBoy on page 1 of this thread. If you indicated, I missed it, but my first question would be--what type of hunting will you do, mostly, with this dog? In 1990, I bought our first dog, a beautiful Golden, for $350 as a pup. He was wonderful--that rare combo of house dog and field dog we all look for. He had a great nose, was a terror on cripples, a fine duck/goose retriever and very obedient. That was the "pros". Cons: he picked up burrs easily, was prone to skin problems and was affected by allergies. My second dog was a Golden---same deal, only WORSE with the skin problems; would up spending $3,500 at the Purdue University vet center; he died too young. I'll skip the half-truths and BS told to me by several breeders and say that you need to be VERY CAREFUL in picking a pup and breeder. And with a started dog--I'd never buy one of those without seeing him actually hunt first.
My current yellow Lab is 15 months and has now hunted a full season; we shot a couple dozen roosters and about the same number of ducks over him. He's going to be fine. I paid $850 for him as a pup. Spent $750/month for 2 1/2 months with the breeder/trainer. Well worth it. Few things worthwhile come "cheap". CAVEAT EMPTOR and good luck!