It's really cigar dependent IMHO. For all I know the 10,000 different Viajes released each year or the monster series, They're gone inside of a month, so however many they released is too few, and I won't lose sleep over them. Whereas, special Padrons, EP Carillo, etc. could release 2500 boxes, but these are easily available for a period of time, so I don't get annoyed with them.
So, I guess my answer is a selfish, pragmatic one. If I find them annoying, it's too few. If I don't, it's not.