Roguelike shopkeepers know this trick - that's why they always stand in front of the door as soon as you pick something up.

Huh, I swear I've seen a version of this comic where the shopkeeper has been robbed blind in the last panel.

Ah so that's why the nazgul always hunt the ring bearer. They're store security

Anti magic field and guards at the door if he's not naive.

Amateur move. The rest of the items are still in the shop.

The ring is also cursed to be unremovable. You either need to get used to stealing every single mundane item from clothes to food every single day or pay the shopkeeper to remove it.

STOP RIGHT THERE CRIMINAL SCUM

> Shopkeeper presses the big red button under the counter

> Ring explodes

The price of the spell to undo the invisibility has now gone up to 100,000 gold.

There should be a visible magnetic tag floating in the air.