You can pay $4.44 at Walmart in the 10 pound chub.
The Meijer grocery stores near us in Michigan put their 80/20 ground beef on sale for $3.69 a lb several times a year in 3.5 lb packages. I buy and repack/freeze. A local meat counter sells a beef pork ground blend for $3.00 per pond and I use it instead. I’ve used the 1lb packs of domestic WAGUY ground beef from Aldi and mixed with grounf pork or chckken or turkey 1lb frozen chubs from walmart. The waguy is 73/27 at best so the lean turkey or chicken mixes nicely and moderates the fat content. Great for Manwich and taco meat, meatloaf, etc.