I have the same snag, I'm in a market town in the middle of nowhere and only bags of hay, no name are available. I can't get very far anyway so the internet is a godsend. It costs more in P+P but I can get what I want and what my boys need. Mine is under the stairs so it's kept dry, not alot room for anything else, but bird seed and stuff I keep in dustbins in my outhouses so it's safe from mice, dry and out the way.
I see hay and food as part of the price of having a bunny to be honest. I am on disability benefits and most of that goes on my boys. I just don't get so many new clothes, shoes, CD's, make up etc! I don't smoke/drink etc, animals are like kids, cost alot but well worth it.
Nowadays there's so much evidence that 'we are what we eat' ( I hate that woman) but I have always thought that food is fuel, we are complicated machines animals and humans, if you put in rubbish there's more problems with health, weight etc, you eat well, less chemicals etc and your body is better maintained. My guys can't go to the shops and get their own food, they are entirely reliant on me and I do my best.
There was a hay survey recently if I recall, all I know is that I can't imagine many people using Oxbow and then going back to random dusty stuff that could be old and not stored well.