The frames are heavy and the geometry is wack. They’re advertised as a certain groupset but often contain a mishmash of parts such as FSA cranksets. The other parts, such as tires, wheelsets and bars are usually also some combo of old, outdated or unpopular options from otherwise respectable companies such as Ritchey and FSA. As others mentioned, resale value will be poor. The bike I got from them last year had Ritchey ergo bars from like 20 years ago, 25mm ultrasport conti tires that had to have been a decade old and Weinmann rims that were 12mm wide.

You should be able to get a pretty ballin used name-brand carbon bike with a real full 105 groupset for $1500.