You can use a regular 3dpt bypass for most of the VFE builds, but there are a few that use the charge pump for extra headroom. The MCU chip is just for the fancy relay switching
I think it was a minimum of $60 for programming, on top of whatever the chips cost from Microchipdirect. I will have to dig up what the per chip rate was. I went that route due to number of chips I ordered and over half were SMD.