You may have heard artists talk about, in a disparaging way, "Buy & Sell". This refers to merchandise that is purchased, as is, from wholesale vendors for the purpose of resale. This is not a crime of course, but for craftspeople and artisans who make their own work, it feels criminal when these merchants pass off this work as their own so they may have access to the Art & Craft show buyers.
The Craft Show Lore goes that vendors have been seen unloading boxes clearly marked "made in China" at some craft shows. After attending the Tuscon Gem Show, it is amazing that any jewelry is handmade by the artist. There must be a zillion companies making jewelry for resale, and most of this is made in third world countries.
I have seen a customer sporting a new piece of jewelry that I know was not handmade ( in America, anyhow), and yet they just bought it from another "artist".
There are many shows where Buy & Sell vendors are desired and sought after. Great, high end importers can be found at these shows, and non-profit groups that support third world artisans. I like going to these shows from time to time myself to see a different kind of work.
I just wish those that buy for resale would stay honest, and stay out of the craft shows.