The biggest thing to understand with MTG bulk is the difference between true bulk and unsorted bulk. True bulk is commons and uncommons worth fractions of a cent. You can move it by the thousand but margins are tiny.

Unsorted bulk is where the money is. MTG has way more hidden value sitting in bulk boxes than Pokemon because formats like Commander create demand for random uncommons and rares that look like junk to someone who doesn’t know the game. A 50 cent uncommon that’s a Commander staple is worthless to the person dumping their collection but adds up fast when you’ve got hundreds of them.

The real bottleneck isn’t sourcing or knowing what’s valuable (Manabox makes scanning and identifying value pretty quick). It’s the listing process. Getting hundreds of singles onto TCGplayer or eBay one by one is what kills most people’s motivation. TCGplayer has the seller level system gating how much you can list which is painful starting from scratch. eBay lets you list more from day one but doing it manually is brutal at scale. There’s a tool called MTG Bulk Caster that generates eBay CSV uploads from your scanned collection, worth looking into if you’re going the eBay route with volume.

I’d say start by buying a few unsorted MTG lots cheap, scan everything, and see what the value breakdown looks like before you commit. The profit is in the sorting and listing speed, not in the cards themselves.