Happy Holidays!
I bought an Ltwoo GRT 12 speed groupset from Panda Podium and it was really good, no problems, other than probably paying too much. I should have just bought the group from a seller on Ali and paid less.Good luck!
The €112 deal is the cable actuated brake version of the groupset.Front lever:https://www.bike-discount.de/en/shimano-grx-bl-rx600-l-br-rx400-front-disc-brake-top-deal-20139130-20216537Rear: https://www.bike-discount.de/en/shimano-grx-st-rx610-br-rx400-12-speed-rear-disc-brake-j-kit-flat-mount-30mm-top-deal-20253859RD: https://www.bike-discount.de/en/shimano-grx-rd-rx822-1x12-speed-rear-derailleur€223 Total Levers are not exactly the same (610&600) but only the finishing is different as far as I know.
I two wheeltop 1x systems. One is their GeX to run on my road bike as a 1x setup. used for 1800 miles. the other is a OX 2.0 mountain rear derailleur, used for about 1000 miles. Both worked perfectly without issues. I tried the race option but it drained the battery too fast without much gain. So I am using the regular setting. What they impressed me the most are the cost and the battery life. battery last a few hundred miles so I only charge them once every few months. Never got stranded. Another big selling point is that they can work with any cassettes 7 speeds to 14 speeds so it is a big plus for me cause I have many bike parts lying around. I just rigged up a "gravel bike" using an old mountain bike frame and 11 speed cassette to use with the OX 2.0. Neither Shimano nor SRAM could do this.