From me getting into breeding this last year.
There are few and far between quality breeders. Be careful and do your research.
I'm in upstate NY and one of two that do colors (Grey/Buff/Blue/SB). White is the preferred for show quality, and you can order some from hatcheries. My best quality birds came from OH and from original stocks. (Roundtree/Cottage Rose/Holderreads), but it is hard to come by and the stock is hard to breed imo.
If you are looking for show quality white ones there is a bunch of them around, but it depends on what you are looking for. The birds themselves are expensive. ($300+ for Goose, $240+ for Ganders).