Quoted from pinnyheadhead:

You can open the box you just can’t open the packs.
Yeah the main deal with verification of boxes and grading of cards is you don’t get in a buyer and seller back and forth feud over condition since most purchases now are online. And some folks want - the best!
Maybe look at things like this - Regular key cards in nice condition are worth money. Top graded cards of stars are worth more money and even top grades commons are valuable for set collectors. This is why folks like looking for fresh cards in packs.
Which leads to an older unopened wax box being worth money because folks have memories of ripping packs back in the day so they can keep the packs sealed in the box, open the packs for fun or open them to look for key cards and commons to grade. Verified boxes are worth more because a respected baseball card shop checks the packs to make sure they were not opened an resealed. Good to know before you lay out almost $10,000 for a 1980 topps wax box. A non verified 1980 box is still valuable but you are on your own with the purchase. And these were $.20 a pack/36 per box back in the day, so.......yeah.
Also with wax boxes a rarity happens because as they get opened the numbers of them go down. New cases of card finds are disappearing as value goes up and more and more enter the market - like Pinball - where the did warehouse finds go??
Even mass produced junk boxes with no key cards are gaining value as folks like to have some to open for fun.
Yeah sure it’s weird but if enough people do it it’s a thing until it’s not. Hope this helped.

Quoted from pinnyheadhead:

Unopened boxes = $$$. Don’t open even one pack out of a box and look value up first. Go on eBay and enter “BBCE” to get a value on verified boxes from Baseball Card Exchange.
I mean I think going over some of that stuff would be fun. Hope you and your family are doing well Woody!