Wireless Router Question

[Typhoid]

I really wish we had a general Q&A thread.
I guess nothing is stopping me from making it, but whatever.

Anyways, I know far less about hardware than I do about software, so wireless router quality and whatnot is gibberish to me.

Now, I just need a wireless router so I can finally get my PS3 online. It's a slim, so it needs to be a wireless connection.

The router doesn't have to be super powerful (as the router will only be about 15 feet away in an adjacent room), however I don't know what is a good deal, or what isn't - or even what to look for in the first place. I don't know the difference between brands, or all that fancy code to differ each router.

I'm looking for the most cost-effective router I can find, or even one that would be comparable in price, as long as that price is relatively low.

I've seen some as cheap as 35 bucks, and some as high as 150. And while I assume the only difference between them is signal strength, I really have no idea.