I was looking through my bookmarks earlier trying to find a recipe I thought I'd saved when I came across this link I had forgotten about.
https://www.azurestandard.com/
It's bulk natural foods including vegetables that you order on the website then are shipped along with others in your area for pickup at a specific drop off point and time.
I learned of it originally on a food board for my area on Facebook, but never used it because the prices are really high compared to what I can pay locally living near farms and good farmers markets, not to mention the higher fee for delivery my far East.
Vegas doesn't have the higher fee, plus you said you can't find good farmers markets and I have no idea what you pay for things there so I thought I would share in case this was something that could help you do what you do.