Walmart has the HP DeskJet 2622 Wireless All-in-One Printer for $19 with free in-store pickup or $5.99 for shipping. Features 600x300 dpi maximum color print resolution, duplexing, and a 25-page tray capacity.
Amazon has the Brother HLL2350DW Wireless Duplex Monochrome Laser Printer (2017 model) for $80 with free shipping. B&H Photo Video sells it for the same price.
Amazon has the Canon Wireless All-in-One Printer (White, 2226C022) for $40 with free shipping. Features 7.7 ppm black print speed & 4 ppm color print speed, 4800x1200 dpi maximum color print resolution, 802.11n wireless, compatibility with Google Cloud Print and AirPrint.
B&H Photo Video sells it for the same price.