I hate to keep this going, but because I watched a few of his pack break vids, this one came up in my feed. Warning - only for you true masochists out there.
Considering the cost of grading, I'd make darn sure my mid-grade 1980 Jerry Reemys and Dave Stibes were the best mid-grade copies I had before sending them in...
https://www.youtube.com/watch?v=Va0eXVhBCyg&t=1089s