Testing costs are not that much compared to the manufacturing. Especially if they are using carbon fiber composites. Although I think the best result is that t

Testing costs are not that much compared to the manufacturing. Especially if they are using carbon fiber composites. Although I think the best result is that they get an much more detailed look at how their rocket parts are performing. Telemetry is great, but when you can inspect the actual part you can improve on things that may end up being a problem down the line. That's how block 5 boosters came about for the most part.