How do you figure it's going to be $129?
Because a single Topre board is going to be a hell of a lot easier to stomach financially/logistically than having to deal with several MX boards each having up to 5 switches. On top of that when it comes to warranty time I'd gamble to say this board will outshine its MX brothers which will further save them money - which should allow them to lower the warranty buffer.
There is no free lunch however - I'm sure a contract is in place that places an expectation on them to make large orders regularly.
Retailers will love this board because it has a single SKU.
On the back end side of things - Topre has successfully exported this tech already - so other than the stabilizers and MX connector there really are no surprises. I'm sure in a lab somewhere in Topre they were working on this stuff long before Carter ever made an announcement so most of the research was already paid off.