Are these even released yet? The official Moondrop webstore does have a product page, but doesn't even have them listed for sale yet. Shenzhen Audio is the only place that I've seen them listed for sale. I'm not sure Shenzhen Audio is actually an authorized dealer for Moondrop.
Edit: Hifigo is now listing U-2 for sale.
I ordered them from Shenzhen Audio, who to my knowledge is an authorized Moondrop dealer. I know many of the Crinacle IEM collaborations have been exclusive to them in the past.
I actually already have a tracking number, which is exciting! Hopefully it means it won't be too long before they actually show up.