That isn’t a smart buisness decision. I would rather believe that the true cost of V5 brain is less than $169 and an ethical choice would be to sell it, like, for no more than 20% markup, plus s&h. Not a 50% markup for a product that is notorious for burned motor ports, that for many teams becomes unusable around the time when the warranty runs out!
Imagine buying a $169 kit. Then swapping out the power board to an old V5 brain with a bunch of burned ports.