Cherry picking pallets is a big deal and all the warehouses try to say they don't, but everyone does it. The only one I went to that was legit, had people line up outside when a truck arrived and everyone bid on the pallets as they were coming off the truck. Not surprisingly the value I got out of those pallets was 10-20x more than from other pallet warehouses.

All of the other places are cherry picking and reorganizing pallets to elicit higher bids and tend to run their own parallel retail / resale operations. It's probably necessary though because the guy selling directly off the truck went out of business last year.