This is me. IH181 has been my grail book since I was a child. Had an opportunity at 11 years old to buy it for $70. Almost got the money from my parents to do so, but then backed out cause for an 11 year old at the time $70 was a lot of money. Plus I didn't get the significance of First Appearance as I had just started collecting Wolverine comics and this was an Incredible Hulk issue. I finally got around to buying a CGC 7.5 for $1,600 in 2016 knowing I'll never sell, but like you said, if I ever find myself needing money, love seeing that a 7.5 sells for around $7,500 plus now. But probably sell sometime in retirement age if at all in a couple decades.