There are lots of decent sub $400 new bikes available imo. That's one of the sad things about many cyclists, they've convinced themselves that anything that doesnt cost at least $1k is unrideable junk, and then dispense this misconstrued advice to others that are just starting out. Often discouraging newbies from taking up riding due to financial restraints. In reality we live in a time where modern production methods and overseas labor make it possible to get something very rideable for not a lot of cash if desired.