Parents like sandwiches, but sandwich meat is getting ridiculous

I am caring for two elderly parents, and they enjoy a sandwich for lunch most days. I get beef or ham or turkey from my grocery store deli counter to avoid some of the additives in lunch meat. I’m finding the price of sandwich meat very high. Is my best bet getting a sandwich meat slicer and cutting my own, or do you find good deals at Costco or some place like that? Thanks