Not opinion but business, if you sell at near bulk rates then simply sell the lot at bulk and save a load of work, simple/makes sense.
At those prices they need to shift large volume to make a basic living, lifting to £6 b2b the outlets will still sell for a higher margin no problem and save a load of work. Consumers don't get the option if the outlets will only pay low prices and never stock the smaller producers.
As the pricing is still the same as years ago and everything has gone up by 40% ish it also puts a business at real risk of failure with little if anything left for investment with such slim margins.
Customers are still getting a good deal @£8 a jar, honey is a valuable product and should be treated as such (the price of a couple of coffee's...)
Supermarkets push cheap product.
PS. I used to run a biz selling cheap stuff to 1000's customers a day, big numbers razor-thin margin, not much fun.