NFC is screwing with custom builders how exactly? Your price staying the same is completely your choice, and I take no issue with such, but I don't see how this impacts you negatively. Essentially, you're putting extra money in your pocket if the customer agrees to your price.
If I were building for others for additional income or whatever, I would absolutely pass along the savings. I'm not losing money, and it seems like a golden opportunity to gain new customers. Once they see your work, because you are indeed very talented, chances are they will become returning customers.
The sales are great imo. Not every person who builds, builds for paying customers. As a customer, if I saw the sale price and inquired for a custom quote, then was told the builder would still charge me their regular price, I would think to myself that seems kinda greedy. The builder is willing to put extra coin in their pocket, but does not want to share. I mean you're not losing money, just voiding the opportunity to make additional money. I'm not trying to be jerk like, just stating some food for thought.
As for the blanks, I'm curious to see how these perform and stack up to Point Blank. IMO, the HMs aren't quite in the same league as PB. I really like the fact that these new blanks aren't sanded.