I tend to purchase fish at my favorite [acronym="Local Fish Store"]LFS[/acronym] and then buy my food and equipment from any source depending on who has the best price. What do you do?
i love the lfs by me called country critters..... many fish over 300.000 gallons of fish tanks.. if not more... not including the show cases with big arowanas and a pond.
You would not believe how cheap you can get fish & supplies from auctions, swaps, and local breeders. Clubs will often buy food in bulk, giving the members the product at cost. You don't have to be a breeder to be a member, or even own fish. Many of the members of the club I'm involved with have 1 or 2 tanks; they reap the same benefits as any other member.
I’ll buy bbs online, usually splitting a case of 12 cans with a couple other people. Once in a while I’ll buy other supplies online, usually I bulk, and sell off a few of whatever to friends. Food & other supplies I get through the club, tanks & other goodies usually come from auctions. I can’t remember the last time I bought a fish from any place other than an auction or another breeder.
My local Maidenhead Aquatics, and also another smaller aquatics centre that is near where my mum lives.
I'm well known at both of them, and always trust their advice.