This is interesting. When I used to do the flea markets (not scrollwork) we ran an experiment. If I stood at the counter just being there, I sold more. Sitting in a chair even at the counter, sales dropped, a lot. so I took a stool and only sat when my back needed a break. This made a big difference. I don't know why even as I was at the table either way standing brought more sales. Maybe just more respectful, more approachable don't know for sure, just know it works.