You need to figure the cost of the ingredients plus your labor, plus a little for overhead (electricity etc). I would check on etsy to see the going rate for the size you make.
You prices are going to depend on your cost of raw materials, your overhead, what you pay yourself, and competition in the over all market place, your local market place, internet and in person trends, etc. etc. and probably will not be the same as mine. This article will probably be of help to you. http://aeolidia.com/wholesale-pricing-tips-formulas/