Image packs of past content?

It is no secret that I do plan to sell Round Hog's Day to those not on the patreon. 

What is your opinion if I were to do the same for past years of butterball tier content (I'd only sell what's been out for a year or more, not any thing sooner than that, and likely only once a year). Should I? Or should I leave it strictly exclusive for patreon users?