There are models with wireless in the form of built in hardware or one or more Mini PCI slots but they're not really consumer boxes that are ready to go. You'd buy the board, the wireless card if necessary, an enclosure and then antennas. Probably not really what you're looking for in your case but very flexible if you do ever want to do wireless outdoors, as a big mesh or a long distance link etc...

If you don't need that much RAM, flash and the micro SD slot then you can get the 750G which Andy is using for quite a bit less. You get a plastic case instead of a metal case however and RouterOS L4 instead of L5 which is unlikely to matter for most people. You can run regular Linux distributions like OpenWRT if you wish as well and replace the RouterOS software which has a Linux core but you can't access it.