In bike-discount you have the levers and brakes (grx600) for 400 the set. Add 100 eur for the RD (812) and makes it 500 EUR. These cost 400 EUR.

https://www.bike-discount.de/es/shimano-juego-de-frenos-de-disco-grx-bl/st-rx600-br-rx400-de-1x11-velocidades?number=20073286&__delivery=280&__currency=1&srsltid=Ad5pg_EmqHwZl2Mnd8BDJpdDPxsXsOvGBYzGCPIPRhi0_bDrCa9PCFDkOIU

For that price I would be also wary to get the ltwoo, but ... the GRX without mods goes only up to 46t (and officially to 42t), which is garbage in my opinion if you want a 1x system. I think they should have designed the RD as their MTB ones, going up to 50t to make it interesting. You can mod them with the garbaruk cage, but then add another 60-80 bucks minimum, so 600 EUR for a decent 1x system. 

The ltwoo supposedly goes up to 52t out of the box.

Yes in my experience, even using the standard Shimano original pulley wheels the shifting is crisp without any noise. I only use the Garbaruk long cage to replace the original Shimano cage.
I combined it on my builds with the light ZTTO 11-46 cassette that is partly aluminium and I use Squirt wax which works perfect.
So far I did 2200km on that bike and chain and cassette look and feel like new... I have to admit I ride mostly in good weather.

Here is the link to the Garbaruk clone on Ali which costs around 20US$:
https://www.aliexpress.com/item/1005004617465688.html

I installed two original Garbaruk and two AliX sourced parts, I can see no difference in fit or function.

Here is how it looks using some AliX pulley wheels but as mentioned using the original Shimano works as well:


BR Chris

My Fuji roadie has R7000 and there is 40% discount on that model too. Got that one instead. Let's see how it works!

Update. The 40% off seems to have been taken down at least for R7000 model after I placed the order: https://www.amazon.com/gp/product/B0BR632QL6

Parts are starting to arrive in the mail, so its feeling real now! Frame should be here in a week or so.

I need help deciding on groupset. I rode Campagnolo Chorus on my road bike and currently ride Shimano xt on my mtb. Will I be miserable riding Sensah or Ltwoo on my gravel rig, or is it good enough? If I wait a bit, I should be able to splurge on some shimano grx or Sram apex.

I am getting either the juin tech f1 or gt.. I havent decided... what do you all use that you like for that not spongy feeling. Also I am a 100kg rider.