Honey starts out life as nectar..... as we all know. Nectar is very high in water, and the bees work day and night fanning it to reduce moisture content. I've never even heard of grade B high moisture content honey. By the time the cells are sealed, the moisture content of the honey is where it's supposed to be, and cannot spoil as osmotic pressure kills any microbes. I don't see any way one could harvest high moisture content honey. "Something is rotten in Denmark" I'd say. You are NOT being told the whole story. I personally wouldn't touch it with a 10' pole. I'd be suspicious of more than just moisture content. I kept bees years ago, and know many commercial bee keepers. This is just NOT something that happens.
That said, I can typically buy 5 gallon buckets of honey at about $2 a pound ($120 for a bucket if I bring the empty back). Forget the farmer's market, and locate one of the local commercial honey houses. Many of them sell honey out the back door, as the profit is so much higher than shipping it out in totes to someone who packages it and resells it.
H.W.