Bikesdirect.com usually has some pretty good deals. I see their Motobecane bikes out on the trails once in a while. Unfortunately, you can't test ride the bike before you buy it.
Also, think about the warranty, their website says 30 days, then they refer you to the manufacturer for any other warranty issues. They say nothing at all about the bike having a frame warranty. Most Chinese frame sellers claim they offer a 2 year warranty but it can be difficult to get them to cover a problem with the frame.
So comparing Motobecane to a bike you build yourself with components you select yourself and a Chiner frame that you can have custom painted to the color of your choice, price might be a little more expensive from bikesdirect.com and warranty is probably similar all things considered.
The bike you linked to is at least a modern carbon frame design with the inverted shock, GX Eagle 1x12, a Pike fork. I do much prefer XT brakes over Shimano, the KS Stealth dropper is fairly low end. I do like the threaded bottom bracket though.
I just had a friend purchase a Canyon Spectral CF 7.0, pretty nice bike with a better warranty & return policy, and I've heard really good customer service, but cost is a bit more. I saw 4 Canyon bikes on my local trail in one day so they are also pretty popular.
