Im not going to speak for UB, but personally, my grows are better than dispensary bud most of the time. Sometimes when I'm able to get killer strains from choice growers I am impressed. Bloom in Phoenix was selling some gear from a local grower who is really fucking good. They grow Blue Dream and Sweet & Sour, really good bud. But other than that, all my gear is better than local dispensary bud. It was better in MA & RI when I was growing there too. But not as good as some of the gear I got in Maine. Some of those guys up there can really grow.
What Im saying is that I might not be top notch, but I am certainly better than average, and would certainly be able to sell my gear in a dispensary. I don't. I've thought about it. But it would require me to grow more and stick with a few strains. I'm in no way like racerboy, but I do have a ton of seeds, I like variety.