Yaun is a Chinese surname popular in the U.S, so yauns.com could work for a small business, so $XXX - X,XXX for that one.
Xoor.com is clearly in the $X,XXX, mainly because how visually distinct it is. The "oo" looks a bit like eyes/glasses, and the x is also something that pops. So it's very easy to remember visually. But phonetically it's a bit troublesome, because of now many ways there are to confuse it (sore.com, exor.com, etc.).