The trend at the top clinics seems to be to keep the egg count in that range to ensure quality. Of course, it can not be totally controlled, but that is what I was expecting, and I would not be disappointed. You will probably have a much higher rate of fertilization with 12-15 eggs retrieved than a haul of 30+ would fertilize. That's just my anecdotal observance over the years.
My new RE specifically said he tries for 12-15 as an ideal, and while our donor has more follies right now, I am just hoping for enough for a few rounds of frozens. With your numbers, you have every reason to expect that.