You should really talk to SP about pricing ASAP, so you can give folks an idea of what kind of pricing they’ll be able to hit.
From what I understand, they make Alps caps quite a bit more expensive than MX, and Alps DCS in particular are very expensive.
To be honest, I think they’re going to over time lose their currently privileged position providing high-quality custom-designed keycaps to hobbyists, because their pricing is really opaque and confusing, and way too high.