Skyrim: How To Level Speechcraft

Just a quick demonstration of what I learned from 10 year old forums. Since this is a merchant character I wanted Muk to have high speech but it was taking a long time so I looked it up and the trick is to level up potions, sell the expensive potions, buy them back and repeat. As you can see, even at high levels it takes only a couple seconds to level up once you get to the point of selling 2000 Septim potions. Are those still Septims even though they’re called gold in Skyrim? I don’t know.
There’s also a glitch so that you don’t get full experience for selling multiple items in the same transaction. That’s why I had six potions but only sold one at a time.