I have used them. I try not to.
They sold me a NS Bikes Djambo frame, sold as new.
It arrived and the box had a big sticker on it that said “dented headtube”.
I was hoping it was a old box that didn’t match the frame, sadly the frame was dented so had to send it back.
It was basically someone else’s damaged return that they were flogging as brand new.
The listings do not often match what turns up.
148 boost but 142 turns up.
11 speed shifter but 2 speed turns up etc
They just try to flog used broken stuff as new, then give you 10% refund when you talk with them.
I have had some good deals, like roam carbon wheels for £130 new but really like said above if you shop around you can buy the stuff with warranty for the same or a bit more money.
They also use Hermes, so a lot of the stuff turns up battered.