Kathy is also a painter. Fine art landscapes. Those get sold outside the secret market, they do not too bad, she's made a bit of a name for herself.
But the earrings have a special something that garner compliments. It's not just that they look nice - people find complimenting you almost irresistible.
The fine artists don't appreciate crafts, though, think it's a bit cheap. Snobs. That's why she comes here, where she'll be appreciated.