A few weeks ago, we learned of a fantastic find for one lucky fan known as Heidi "Zerochan" Kemps, who came upon a box full of animation cels from the production of Mega Man 8 while at the Fanimecon 2017 Swap Meet. While she is keeping most of the cels for herself, she did mention that she would eventually put some up for sale.
Well, that time has come, and as of this writing, you can now find the following listings on eBay (though for some reason, they don't seem to be coming up in any searches -- not even the list of Zerochan's own items for sale!).
Click the caption under each image to see the listing and the current bid for each item.
There was also one other, but unfortunately for those hoping to own a piece of Dr. Light's sweet, sweet backside, that listing has already ended. As of this posting, the rest have four days and 14 hours left on them, save for the one of Mega Man himself -- that has an extra two days on it.
For further updates about any further pieces going up for sale or just the state of these auctions, I recommend following @Zerochan on Twitter.