We make our own hay and let me tell you, a little rain does NOT always equal plenty of hay. We got a great first cutting, and it looked to be a good year, but between bugs, heat, and drought, we likely won't even get a SECOND cutting, even though the last few weeks have had a good bit of rain. My hay supply is less than a third of what I normally have this year, and not anywhere near enough to get me until spring, so now on top of the cost of maintaining my equipment, I will STILL have to buy hay at insane mark-ups.
The hay sellers aren't dumb. They know people have no choice but to buy hay at whatever price they set, no matter what quality, because the animals still have to eat. You shouldn't expect the BO's to take it on the chin and spend three times as much to FEED your horse while your cost remains the same. They have to make a living too.
"Keep a leg on each side and your mind in the middle"