I have a 1984 Star #101 RC Michael Jordan BGS 7.5 (7 centering, 9 corners, 9 edges, 9.5 surface). Worth $9,000. I have several other cards valued at $1,000 to $5,000 each.
My most expensive card is a 2017 Contenders Autograph Playoff Ticket (vertical) #/15 RC Patrick Mahomes ungraded but mint condition. Probably could sell it for $35,000 to $60,000. Keeping it with my collection though. I have at least one top card from 1957 to present of every HOF and future HOF player in baseball, football, and basketball, most graded.
My entire collection is valued at $400,000.