I'm not sure what the best method is to show my prices: if I list my best/most competitor's prices, then I won't have much room to give out any discounts because I would be cutting my margins too thin.
Inflate your prices and offer no discounts unless, of course, you want to kill your margins and go out of business.
Q: How much should you charge?
A: As much you can.
If your only competitive advantage is a low price, then you made a mistake a long time ago with your packaging and positioning. Go back to the beginning and start over.
If you need help, let me know. I'm happy to help.