I'm not sure if any freezer is frost free. I've had chest freezer and a vertical that wasn't, but that was decades ago.
I have two refrigs, one in garage to unload things from car and a second in kitchen. That gives us the extra freezer space we need, not to mention space for extra drinks. Not sure if that would be enough for 500# of beef. But a refrig is definately frost free. I didn't like defrosting the old freezers. George