Cubbby estimates a card's value from market evidence for the specific card you are viewing or saving.
What affects value
The most important inputs are:
- Year
- Set
- Player
- Card number
- Variant or parallel
- Autograph, relic, insert, short print, or image variation
- Grade and grading company
- Recent completed sales
- Active marketplace listings when sold data is limited
Sold comps matter most
Completed sales are usually the best signal because they show what buyers actually paid. Active listings are useful for context, but asking prices can be too high or too low.
Grade-specific values
A raw card, PSA 9, PSA 10, BGS 9.5, and SGC 10 can all have different values. Cubbby tries to price the card at the selected grade instead of using one generic value for every copy.
Exact match matters
If a card is a Purple Refractor, Gold parallel, numbered autograph, or short print, it should not be valued like the base version. Confirm the variant on the card detail page and report mismatches when the card identity looks wrong.