A half beef is not a box of ribeyes.
It is a balanced share of the animal: steaks, roasts, ground beef, ribs, slower cuts, and sometimes specialty items. That is the point. A freezer share gives a household variety over time instead of asking it to buy only the popular cuts one package at a time.
Before placing an order, ask how the beef will be packaged, what freezer space you need, and how the cuts will be divided.