if we analyse merida, almost same size than giant. owner of around 50% of specialized. owner of a famous factory which is know to build state of the art bicycles.
all the process is optimised and the suality control too.
but building a bicycle is a sum of details and at each step , even a famous factory has thz possibility to follow the somerhing between the cheapest and the more expensive way.
for example the resin is quite important. if you build the same bike with the same specs but with different resin, some years later, one can become a spaghetti and the other one can stay stiff. nobody speaks about the resin , but maybe it is better with a big factory. i think oem makes great and robust frames but i believe their beahviour evolves faster than best branded frames. the final cost is the difference between the buying price and the selling price. at the end, i m not sure that the the lost money makes the difference.

Interesting price point.
...
So... interesting price point. Most of my friends are completely hopeless with their bikes, so i can see how paying up more upfront to get shimano (i'm assuming it really does "just works") makes sense for a lot of people.
I've been happy with my er9, when it's working. But they literally all died by now, except 1. that's some atrocious fail rate. The good thing is that everything works reliably, except the RD, and the RD "only" costs 150 eur shipped to my door.

do we know what is going wrong with the RD (not waterproof or mechanical failure)?
btw i intrested in your best chinese option (reliable ) for light carbon crankset and cassette

ok but what is the best price you find ?

calm down! my friends

Discount code not available on most products mehh.

not fair
one of the drawbacks 
but let s sue them for false advertising now et let's get a free frame

not cheap
not light
but a super frame at a discount 54/58 still available

https://www.tradeinn.com/bikeinn/de/specialized-allez-sprint-2024-stra-enrahmen/140415957/p

I think 800-850g seems reasonable for an aero'ish T800 carbon frameset. All these companies say they're T1000, but that's just part of the marketing routine to rope in the noobies.

Anyways, just pick a vendor that has good communication and answers your questions. Though if they keep calling you "friend" in every reply, they're probably bullsh*ting you! 

Winspace has built the SLC 2 with an unknow proportion of T700/T800 around 800gr before painting, but i believe that's a serious and reliable factory with optimised process. it s not properly achievable by all

short list to consider