Yes, you are reading that correctly. The name of this local produce shop is "U Don't Know Nothing Produce".
I don't even know what they are trying to say - they know produce and I don't? You haven't seen produce as amazing as this?
I shop there, I know produce, and there product is fine. It's middle of the road - not the cheapest, not the most expensive, not the freshest, not the least fresh. But it is convenient especially if I need to get cat supplies as our favorite little pet supply shop is right across the street.