Know the number first

Before you list anything, get a current, comp-based value per card and a collection total. You cannot price, negotiate, or spot a lowball without it. Slabline values every slab from realized sales, so you walk in informed.

Match the card to the venue

High-value and rare cards do best at major auction houses (Heritage, Goldin) or reputable consignment. Mid-market cards move well on eBay. Bulk lots can go to a dealer for speed. The right venue trades convenience against final price.

Mind liquidity and timing

Cards that trade often sell quickly near their value; thin-market cards can take time and a discount. Sell into strength — a player’s strong season or a set’s renewed attention lifts realized prices. Slabline’s liquidity factor flags how fast your holdings convert to cash.