Every time I see this shit it makes me want to vomit. I started playing Magic 5 or 6 months after it came out. I missed being able to actually buy Alpha and Beta packs because they were gone almost immediately, but I did manage to snag some packs of Unlimited and bought a fuckton of Revised.
Anyway, the point of this post is that I was a semi-completionist MTG collector and I wanted to have a playset of every card printed. While that never happened -- at one point in '99 I had a FULL set of Alpha, two sets of Beta, two full sets of Legends, and 4 full sets of Antiquities. Despite my obsession, I disliked the white border of Unlimited/Revised and traded all of them away to build other sets. I had close to 4 full sets of everything else released up until '99, but they really weren't anything to write home about at the time.
I've avoided doing the math to know what my previous collection would be worth today because I know it's in the millions. In early 2000, I sold the entire lot to Troll and Toad for 22k. At the time, I thought I made out like a bandit because I had more than tripled the money I had invested in it.
After selling out in 2000, I got the itch to play again in 2013 and grinded my way back to the Pro-Tour. After going to PT Battle for Zendikar I quit the game for good. However, between 2013 and 2017 while I was grinding WoTC and SCG events, I amassed another fairly respectable collection (though not even a drop in the bucket compared to my previous collection). I still have about ~$50k in Legacy/Modern staples.
I honestly don't know what to do with them. I've considered selling out again, but about half the value of my cards is tied up in cards on the Reserved list (e.g. 40 Revised dual lands and another ~$10k in staples). I'm not confident that WoTC won't do something stupid to devalue them, but I've already been punished once for selling out early. Maybe I should probably just hold on to them unless I absolutely need cash.