For comparison, interested buyers owe it to themselves to check-out Stuffit Deluxe, or whatever it's called these days. There's a promo somewhere—maybe paddle.com—offering it for $10.
Stuffit Deluxe was the premier compression application during the "classic" Mac era. It still has some applicability in the modern age, although the march of technology as well as Stuffit's own competitors have left that stalwart utility in the dust). If this app only handles BinHex, then it only handles a fraction of what you may need. Then again, it only charges a fraction of the cost.