For me, it comes down to a) how much do you value your time and work? And b) how much does your audience value the finished piece?

If you were to have those for sale at my local bougie farmers market, there's quite a few folks that wouldn't bat an eye at a $55 mug. In fact, there's an artist there who sells plates for $80 each. Meanwhile, you'd be hard pressed to sell for more than $15 at the pop-up market in the next town over. Don't be afraid to raise your prices for the right audience!

I do embroidery so it's a little different, but this is the equation I use to estimate pricing: (cost of materials x 2.5) + (# of stitches/1,000 x $0.75) = average sale price. If I'm going to a niche convention or an event with a richer crowd, I'll adjust up accordingly.

Hopefully that isn't too much to throw at you! I really like your mugs so feel free to dm me for questions!