I'd jump through as many hoops as needed to get a hold of addons like Auctioneer, [any all-in-one-inventory type mod], Skillet/ATSW, and Carbonite (Quest section) or QuestHelper.
It's within the right of any author to choose where to distribute his work. If an addon is popular enough like Auctioneer or some type of raid compilation like DBM or BigWigs, then people are going to need to download it whether or not it has restrictions.