The benefit of what doubt? Do you enjoy instigating disruptive posts or something?
I actually stated a valid point with the mod. You're playing suck up.
He's not instigating. Io tried to tell you that there's a hard-limit 25 day period for trades. You're right that it's not listed anywhere on Amazon (only the 7 day mailing period is mentioned), but it exists. You don't have to take io's word for it (or mine, or any of us cracking jokes because we've been doing this fairly extensively and fairly regularly for a pretty long time).
Open a trade on Amazon. Doesn't matter what game. Doesn't matter if you print the label. Doesn't matter if you send it in. The system will automatically cancel out that trade on the 25th day no matter what stage in the process the trade is at. Everything else up to that 25 day period is gravy. You'll be fine. This is an experiment you can conduct/verify yourself. No getting lucky or pulling anything out of thin air required.
And the Amazon TIVs aren't based on "monopolizing the value" but rather on an algorithm they use that factors in their selling price of an item and how many trades they're getting of that item (among other things I'm sure). That's why the games with weird/high spikes in value (and this has happened a lot of times before this current "old gen" game spike) also usually have abnormally high listing prices and the values tank when too many trades are locked-in.
I think you might be giving Amazon and their trade-in corporation partners a little too much credit and assigning a little too much human perspective/thought/foresight into a system controlled largely by a computer algorithm. These same spikes happen to Wii shovelware (some Unicorn and Magic Carnival games netted like $60 a piece back in the day, along with some $40 NDS Fireman game) and these were games that were/are readily available at GS and other places for dirt cheap. They weren't rare, they weren't valuable. And they never sold for anywhere close to the amount of trade-in credit we got for them at the time.
It's a glitch, but more a reoccurring glitch in the system rather than a temporary glitch currently assigned to just these "old gen" games. Best to take advantage of them when/if you can.