I've done some research into my niche, and it seems people usually charge from $10 (not as common) - $25 (more popular) for shop sets. I started selling at $10 flat because I didn't want to charge too high since I'm new. I've just changed my prices to $14.90 and $19.90 depending on the complexity of the design. What do you think?
I also wanted to ask what you think of charging with cents - I see that people usually charge a flat rate around here.