The problem with asking the general public if they are priced appropriately, is that the general public isn't your target market! You NEED to come up with an hourly rate for yourself. Personally, I found that including time, materials and fees into the hourly rate made it easier for me. But you could do an hourly rate + materials etc. Do you not pick a price out of thin air! Find your hourly rate and PAY YOURSELF. If they come out more expensive, then you are targeting a higher price market. There's nothing wrong with that! Maybe you could make smaller coin bags for the lower priced market. I think for the amount of time, effort and detail you are putting into them, they might be underpriced.