Although I've not bought anything from BD let alone a bike, but I find it ironic considering that there are numerous cyclists on this forum that change our parts (handlebars, brakes, cranks, wheels etc...) would be cautious about assembling a bike from BD. I mean these bikes are likely come mostly assembled anyways. All one has to do is put the pedals, handlebars and wheels together. Nothing rocket science about it. Tuning derailleurs or adjusting brake cable? Again not difficult with the rather helpful posters in the Bicycle Mechanic section and websites like bicycletutor.com. If you are first timer into cycling, sure walk into an LBS and get their service which is great.