I can't find them at all on ali, only under the elilee brand at double the price. They look great though, what chainrings are you pairing them up with?

Found a guy on chinese forums who made his own powermeter at home
https://tiebac.baidu.com/p/8770428944
Also learned today they REALLY don't like the brand rockbros there and have some pretty creative insults and threats towards them

Yes I remember seeing that video back then.  That's the road up the marchairuz right?

He suggests that wheeltop might have bought(?) the patent licenses from shimano for auto-trim, flatmount brake caliper, and I think also the battery LED indicator that ltwoo had to cover (ridiculous!). I hope that is not the reason for the "steep"(er) price.

Issue for me would be that batteries eventually die which would render the whole derailleur useless. I'm surprised nobody has used something like a 18650 cylinder battery. Slap a waterproof case in the down tube and put a charge port on the derailleur. Battery (or batteries) die, you go grab another one on Amazon or whatever. This is a deal breaker for me

This is exactly what LTWOO does?

Certainly interesting, I've been on the 630 for a month and very happy with it, I consider it a straight upgrade in every way to the garmin 530 (except maybe the third party integrations but the app really isn't that bad). I trust them to beat the 1040 but magene is about to drop their own touchscreen computer for $160 so I would have hoped it was a little cheaper than $350.
I can't remember the last time I was excited for a western release, but between TPU tubes, DTSwiss clone hubs, hydraulic and then electronic groupsets and higher end bike computers, I feel spoiled.

I wonder if it would sync up with Wheeltop EDS OX and TX electric derailleurs.

They sync with LTWOO eRX already, no doubt they would sync with wheeltop

What about the Sigeyi Axo and their rebranded Fovno Aurora Pro?

https://www.sigeyishop.com/product-category/power-meter-crankset/

that's still $460 before shipping and over 700g (estimate, no weight on the rings) and not compatible with R7150 front mech (why?)
I'm all for trying out exotic gear but when trusty 105 (which you can trust, only ultegra and DA had issues) with a western brand powermeter comes out cheaper and lighter, it sounds like a pretty bad deal with those prices