You want wholesale prices in case you one day decide to sell to a shop and you want retail prices in case you decide to sell at art shows. Obviously if you do both, you don’t want shop owners to get made that you are under cutting their prices, so your retail needs to be in line with shops that you sell to.How is this not the genesis of sellers colluding to inflate prices arbitrarily? The price is not based on demand, but on not offending another seller. This seems a clear strike against those claims that the market naturally attaches value to products based what people will pay.
I'm not going to suggest that artisans shouldn't develop positive relations with those who sell their product, but let's call this what it is rather than hide it behind myths of free markets.