Well, like I hinted at earlier in the section on centering, it all comes down to rarity
Some platforms offer a dedicated collection tracker tool that lets you log all your cards and watch their values change
These include creatures such as Agent Frank Horrigan (indestructible, proliferate), Alpha Deathclaw (destroys permanents), Consuming Aberration (mill), Ezuri (proliferate, card draw), Fathom Mage (evolve, card draw), Lily Bowen (+1/+1 counters, life gain), Marcus (card draw, +1/+1 counters), and many more
Please be sure to add thisYu-Gi-Oh
Corners : I had a card that I thought was in perfect condition until I noticed one tiny nick in the corner
While it should have curved out pretty nicely, having only Folk Hero as the draw card with a single angel should've been a warning sign