Confused a bit here. I've skimmed through this entire thread, even did a word search on my computer, but haven't exactly stayed up to date on all the other threads on this subject.
It seems like Brent and PWCC keep using the word "conservation", when they should really be using the word "restoration", because that's what's really going on with most of these cards.
If he want's to push this agenda at least use the right terms. It's something that's perfectly acceptable in other hobbies and collectible fields, as long as it's disclosed..........and then the market decides what those things are actually worth in comparison to the originals.
Conservation indicates you're using some sort of process to keep the item from being damaged to begin with. Like putting it in a slab, or a plastic sheet, or coating it with rust protector.