The problem is those modules that are completely out of print. There are many who would like to use nationalities that are no longer being made and may not be released for decades. I have been lucky and have found everything but AoO for prices that, although high, are not obscene. I think there is nothing wrong with working around that lack. Others seem to somehow believe it is robbing MMP in some way. Or perhaps they feel it will somehow devalue the copies of AoO The are trying to sell for $400 bucks.