[Arm-netbook] Injection Molding Cost

Hi, I remember luke mentioning in the past that injection molding would be too expensive for such a low-volume project. However I found this project from crowd supply that is using molds for production on a total of ~3800 pledges

https://www.crowdsupply.com/ugl/ultimate-hacking-keyboard/updates/2198

The numbers don't make any sense given the ~100k cost luke has mentioned in the past( the 2 keyboard halves have different designs). What am I getting wrong here ? The factory they will be using is located in Europe.