You offer to pay for Moonflower.

Moonflower: "You would do that?! I mean, that would be cool an' all, but I'm startin'a feel like a moocher."

Crystal Charm: "Well, if it helps, how about a first-timer deal? I'll enchant your cap with one of my own gems, free of charge!"

Moonflower: "Yay‼ Sounds good to me!"

Diamond Aegis beckons to you and Moonflower from his stall on the other side of the road.

Diamond Aegis: "Hey, need more gem sockets on your gear? Come over here, and I'll customize your equipment for ten bits a piece."