Now, granted that's a super low result... that's just one strain from one grower that supplies them and THC % varies greatly from plant to plant. And if they're just getting into the dispensary game, it's likely that they have amateur growers in the mix.
Breeders use their finest product for testing to get those high numbers, they may test multiple plants to get that result that demonstrates the strains full potential. If someone buys that strain and grows it out poorly, you're not going to see those numbers. You can never trust the numbers advertised, period. GHS Chemdog is a perfect example... they boast something like 23% THC and 1.4% CBD and in their official grow video they test it through out the grow and it tests at something like 17% THC and 1.7% CBD.
The only way a dispensary would be able to verify % would be to test every batch that comes in, and not too many places are setup for that yet. Easy solution, though..... don't buy that strain again and continue to appreciate that you have someone offering cannabis at a reasonable price.
Is that the only "bad thing" you've heard about them? Because right now, this is word of mouth w/ no real proof.