The tough thing with pricing on Etsy is.. a buyer searches for an item they fancy buying and then have a multitude of items to pick from so they will look at the least expensive and most expensive and then ask "well why is that one so much more expensive?" Some people will take the time to read the description, learn about the materials (no doubt the most expensive will have quality materials and involve a more laborious process) and buy it. Some people want to buy things cheap.
If you have arrived at the correct retail price yet there are people with almost identical products on Etsy selling for a cheaper price.. it might be an idea to re-think materials used.
Looking at your shop I don't think your items are overpriced. For instance, I have seen similar products online to this one of yours for a lot more money.
http://www.etsy.com/listing/98989362/awesome-bright-orange-fox-ears-cosplayHave you compared your items against other similar ones on Etsy? Have you looked at the materials used?
I do this with my jewellery once I have priced everything up at the correct retail price and often I find cheaper versions of similar designs that use gold plated chains, which cuts quite a large chunk of money off of the price tag and justifies my own prices.
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