I would go with Ted Nicholas's Advice on this..
let your market decide the price.
In my case i would set up 3 price combination in Google optimizer and see where i get maximum conversions.I would also keep a watch on refund rate with the associated price.
As an example in of my niche products there was no difference at $27 or $37 price point but at $47 conversions dropped and refund rate increased.
The market told me that beyond $37 i was stretching them - the product did not have the perception to exceed that price.