Our servos come from Asia. If you can find a platform with everything we have for around $1k BOM happy to review it but we've been pretty deep in picking our components.
Also, fair to say that if indeed you're the kind of person who likes to assemble all of this yourself, you're not directly in our target :)
This is more for AI / software folks who don't want to have to assemble and calibrate everything and risk having an arm that is not repeatable and thus can't actually properly learn. We have seen many folks spend a weekend or more trying to put these together and end up with a barely working platform and then be disgusted of AI robotics