I can't think of an acronym, so I'd say $xx to $xxx. If you hold on to them they will probably be worth more later though. I wouldn't recommend selling 4 letter pronounceable .com's now unless you get a good offer in the high $xxx to low $x,xxx range. They will be worth that in a few years, so you are better off holding out.
Zusp.com is also a better name than Yiry.com if you ask me.