Sewing project bags

This weekend I sewed a few project bags. The are each double sided. I like them. They are small, portable, and hold a ball of yarn very well.

You put the long strap through the small strap and put the long strap around your wrist. No ball of yarn rolling around everywhere.

Here are two I have made so far. I made two on Saturday and two more on Monday night I am hoping to be able to sell a few too.

What do you think? Do you like the bags? I was thinking of selling them for $10. Is that a reasonable price?