As the others have noted, wireless routers are all over the place so they're actually cheaper than any current non-wireless routers (generally for business use these days).
There are quite a few out there (I don't even know why they release so many), but since you're not using wireless at all, then you only have to care about whether the router has 10/100 ports or gigabit (10/100/1000) ports. Look for gigabit ports if you plan to transfer large files between computers in your home (e.g. using a computer or a network-attached storage for backups). Otherwise, just get the cheapest wireless router with the number of ports that you need (probably going to be a 10/100 model).
Although it probably won't matter for your usage, it may be good to get a router that is compatible with alternative firmware (e.g. DD-WRT or Tomato firmware) so you have choices if there's something you really don't like about the software of the router. I personally use a Linksys WRT610N and Linksys WRT-54G (both discontinued) with DD-WRT firmware.
Bought the Motorola SB6120 (DOCSIS 3.0) modem with the Cisco Valet M10 router (wireless disabled).
I have 2 pc and my home theater wired to the Valet.
Ordered the 8Mb/1Mb from Teksavvy and I'm actuelly getting over 1000 kB/s on my Utorrent downloads.:clap:
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