Takei Daloui
Magical Girl
Perhaps what helps it is the resurgence in nostalgia as well as people getting interested in these older titles. Since we've had quite a few old series revived from the dead with these releases, those doing it at least know more confidently that there is a market for them alongside the new titles.Collector's undoubtedly now makes up a bigger percentage of the overall market, but in terms of pure numbers I wouldn't have thought it would sell more copies today than it would have (when it was put to me that it was a financially risky proposition) 5 years ago.
But, whatever the logic, I don't care - I'm just over the moon this is happening. Hopefully this is more of a sign that interest in anime history is on the rise.