I apologise if I came off too brusque. Text does not really convey tone very well, and I often end up doing it badly.
The breed it has is a pretty decent one, yes. If you'd like more information on breeds, you can check out Warla's chart
, and Warcraftpet's explanations on breeds in general
According to the chart, Darkmoon Eye is breed 8, which isn't as good as 4, 5, or 6, but definitely decent. Plus, it's in demand right now for collectors, and is HUGE in-game (seriously, it's like Sauron's freaking eyeball floating above you). I think even if it had a "bad" breed people would want it.