Define "occasional use". A few butts now and then for sausage or whole hogs and deer?
If the former, I would not pick that grinder. Do an ebay search for "Enterprise Meat" or "Chop Rite Meat" and a number of new or like new #5, #10 (both clamp on grinders) or a #12 will pop up. Starting bids at $10 and ending bids in the $20 to $30 range, and even these old machines are many times better than the new knock off's on ebay.
I recently ground an 8# butt on that #5 grinder in less than 10 minutes. With a #22 you would not even be working up a sweat at the end of 10 pounds. For a high quality machine where replacement parts are a concern (about all you will need are plate and blades) a #10 clamp on or #12 screw down would be all a part time home use guy would likely need. Even up to 20 pounds of meat, it may take you longer to clean it than that it takes to grind that much meat.
Beyond that, start thinking of electric grinders.