the sportscard market had a resurgence in about 2008-mid 2010s with game-used/photoshoot worn memorabilia inserted into the cards itself and autographed (either on-card or sticker)...of course, they overproduced the hell out of everything so now prices, for the most part, are in the shitter compared to a few years ago. i did like the concept of them adding cut up pieces of worn equipment in there, so you got bat/glove/ball/jersey/button from jersey for baseball, skates/gloves/jerseys for hockey, jersey/shoes/ball for nba, mouthpiece/glove/shorts/walk-out shirt for mma, etc.
i sold off most of my collection a while back and made a lot of money...not enough to recoup what i spent but still a good chunk of change especially as a few of my cards appreciated in value since they were serial numbered autographed rookie cards. i also had a collection of hall of fame players, many of them deceased, which made the number of autographed cards scarce as they are all locked up in someone's collection somewhere in addition to the fact that they can not sign anymore since they are not with us anymore.
the only thing i look at these days are autographs of boxers which they had randomly added to this baseball set by topps called allen & ginter. i have a small collection of ufc autographed cards from the 1st and 2nd series but i stopped buying once they started over-producing.
which reminds me, i bought a bunch of mcgregor autographed "rookie" cards and flipped them on ebay JUST before he fought khabib and those sales did quite well.
do not buy blaster packs, at all. waste of money. buy singles if you can.