I wouldn't say "good vs. evil" has anything to do with my decision making money-wise- just that I make a point of supporting people that do things that align with my values and goals in life. I still like to be able to have a personal relationship or camaraderie with a business if at all possible, so that usually means trying to buy local if possible, and generally from smaller sellers who are more excited about and in-touch with their business.
When builders like Darkglass and Mesa Boogie make a "Minimum Advertised Price" arrangement with dealers it is meant to help foster a relationship with smaller sellers so that they aren't priced out of the market the way mega-stores like Guitar Center/
Musicians Friend can do with many other products. Unfortunately bigger sellers can always find a way around that arrangement to grab a bigger slice of the market on an item- and offering discounts or incentives privately is something places like GC/MF/Sweetwater/Prymaxe/etcetera all will do. The result is that a disproportionate amount of the sales for items still end up going to these bigger stores, and often smaller stores can no longer afford to stock them consistently (exactly what MAP pricing is supposed to help prevent).
I am definitely not saying that there is anything
wrong with buying from Prymaxe, I just don't think anyone should feel ripped off for not having bought from Prymaxe and hopefully can see the value in supporting some other dealers who want to offer Darkglass products at (or even above at a brick and mortar store) the MAP pricing.