I made one for myself and then I made one for my cousins 50th birthday.
I could have gotten lots of orders and still can she says but don't think they will sell for the price I would have to charge. I prefer to sew for fun not deadline also. Ihave seen designer bags not as nice going for $70.
I think $15 &20 is an insult and a rip off to you. They are lots of work.
Go with your pricing and see what happens. You can always sell them on eBay or etsy.
Good luck. Would like to know what the outcome is..