Since I do not sell for profit, meaning, I sell to get the actual value the item, and not the perceived value, I stick to my guns as far as price. It could be tricky for someone out there trying to make an actual living. What I offer is simply done most of the time out of the love the project, and has been for over 5 years now. I really do understand the different aspects of negotiation, but offer the price that I choose (by actual cost to me) to begin with.
Too many times however, I am put off as a buyer when I see the phrase 'If you are reading this, you already know about this unit'. Absolutely not true in most cases for me. I want a detailed description of the actual unit and its capabilities. If known, a tale of the actual technology is also appreciated.