The blockers are available at $3.50 per piece. Only silver is available though, but if there are more than 100 orders, only black blockers can be added.
If you want them and have ordered already, let me know how many blockers you want.
Also assembly service is only $65 and it includes switches, LEDs, soldering, stabilizers, and lubing and stickering. <---Very good price.
Switches included are MX Red, Brown, Blue, and Black.