Discussion Challenge: Selling Older ARCs: Taboo or Not?

It's been awhile since I've written a discussion post! Things have been busy lately and then when I sit down to write one, I can't remember any of the ideas that had came to me when I didn't have the time to write one! Typical right? Lol. But, two weekends ago, because yeah, I am that behind LOL, I went to the book fair that happens annually in my city. While sadly I didn't find any older titles that I needed or special copies that were missing from my Maria V. Snyder collection, I did see a collection of old ARCs and that got me thinking, is it okay to be selling these? Even though they are older ones and the book has since been published?

Selling Older ARCs

I feel like it's a conundrum. I mean the book clearly states: NOT FOR SALE, it's for promotional purposes. I get all that, believe me! It sickens me when I hear about people selling them on ebay for outrageous prices. But these were older ARCs, the newest of them was from last year, but all the books have since been released and published and are even in their paperback printing now, if not past that! But still, a tiny part of me thought this is wrong.

But then the other part was saying they are older. The books are in their nth printing run for the paperback copy--though I really have no idea what print run they are in since none were ones I felt like I had to have for collecting purposes.

The other upside is that the proceeds of the book fair go to help literacy programs and the like. So it all does go for a good cause. But still, there was a tiny nagging voice that kept saying ARCs are not for sale. But again, I know we tend to find ARCs in used bookstores or Goodwill stores or even garage sales. So it does happen I suspect. 

But what are your thoughts on the selling of older ARCs? Do you think it's okay or are you too left with confusing and conflicting thoughts?