You seem to have trouble sticking to the topic. The topic is about the price of solvents, which are directly related to the price of petroleum. The price of petroleum isn't set by what some hand-wringers decide is a "fair" price. It's set by a worldwide market. A large part of the market price depends on the current state of supply and demand (among other factors). If you don't believe that's the case, I don't know what else to say.
As for your widgets, you can sell them for whatever price you want. You can operate as a charity if you wish.
todd