You must only get limited quantities of these?
Yes. For now. This however is changing, however not soon enough.
To get these wheels, factory spec ordering remains the primary option. Understandably, having a 12 week ETA, or paying air freight rates for a 6-7 week ETA, is not for everyone. There are plenty who do spec order and this has its merits in the ability to dial in a wheel model, size, offset, hub bore, and color within the ranges offered at the lowest pricing in the industry for premium cast wheels.