Benny is looking for a wireless all-in-one printer with fax. Leo says that the fax wouldn't be wireless, obviously. Leo recommends the Epson Workforce Pro. Canon also makes good All-in-One. He can actually get an all-in-one for under $100, the Epson Workforce 3620 is around $120 quite often. But he should remember that the ink is going to cost him.
(Disclaimer: Epson is a sponsor)