I was building fence and had a mixer set up on a trailer with a generator and a water tank. I would go get two pallets (forty two 80 pound bags each) of quickcrete and we would mix it straight off the trailer and use it to set posts. Hardware store wanted to charge for pallets. I told them I did not need them and just load the 6700 lbs of concrete by hand. They waffled and gave me the pallets to avoid the work but told me to bring them back when finished which i did.