As a sidebar to this discussion; When you dabble in higher quality hopefully you get the associated high end parts such as a decent suspension fork (where applicable). Ever price one separately? Good wheels sets don't come cheap either, drivetrain, hydraulic brakes, stiff frame, stainless steel fasteners, large batteries, decent motors all add up. So quality should (if I may use that term) be in proportion to application. Someone that rides 8,000 miles a year will have very different requirements and priorities than someone that rides 400.
I started with a 2014 Dash for $2,600, put 4k on it in 6 months and sold it to get a $4,300 demo ($4,600 retail) Haibike FS RS, which will also have 4k on it in a month. The fork on the Dash turned to mush (and started to rust) in 2 months and other parts were oxidizing fast. The fork on the Haibike is still very responsive and looks new just like the rest of the bike. The brakes on the Dash required adjustment every 120 miles or so (4 - 5 days for me) while the brakes on the haibike required ZERO adjustment for the entire life of the pads (about 2,200 miles), not to mention they work a hell of a lot better than mech brakes.
I guess my point is know yourself, know how into this you are going to be based on past cycling experience and try to buy what is appropriate for your application and or conditions. -S