Pretty sharp! I agree with @DieselTech that it's worth what someone is willing to pay. Unfortunately, customers set the price, either by buying an item, or passing on it. It will, no doubt, last longer than anything you can buy on TEMU, but one can get something similar from TEMU for less than $20 that may only hold up for a couple of years, then one could buy another if desired.
What do your customers want and expect? What have you sold to date that your customers are clamoring for? Who is your client base? They will determine the price. Most of the items I sell are based on demand. Yes, I have made several items that are still sitting around my shop, unsold. There will always be trial and error to find out what those fickle consumers want. But now that I have a customer base built, I have a lot of repeat business on items that could be purchased anywhere. I always try to make my customers feel like they are the most important person in the world. Sometimes it means having long conversations in my shop. Not necessarily about leatherwork. Those talks may be about the grief they're experiencing from a loss of a loved one. Or it may be about their wayward kids.
I view my craft as a ministry and truly build lifelong relationships with the clientele that comes through the shop. Even the classes I have with the school aged kids is about getting to know them and pray over them at the beginning of the class and spending time talking with the parents. I have found that building relationships builds trust and should they need some leatherwork, they will remember fondly our interaction and come back to me, knowing they could probably get it elsewhere cheaper...but they are willing to pay for the pleasant customer interaction.