Ad should read “Has Wi Fi that might work some of the time, but probably not. Especially if you own a Mac. Why would you do that anyway?”
Another possibility: “If you like trouble-shooting printers, buy one of our Wi Fi printers! You’ll love it!”
Or maybe: “You will never run out of ink! (Because nothing will ever print!!)”
Hint: IMHO, if you want quality go elsewhere for your printing needs.