Should I sell a custom built mountain bike as a full bike or break it into parts? I have a bike that I have built up over the last few years. It's a good bike and works as it is, with a good quality components. However, I want to sell it. Is it best to sell it broken down as parts or as a full bike?
It may depend on the overall age of the bike but I would guess that in most cases it's better to sell it as a whole. If the bike only consists of rather standard components that one could easily buy at a LBS, then they wouldn't make high prices and the additional work to break it all down and maybe set them all on on ebay separately may not be worth the money.

I can imagine only two cases where it may be better to sell it in parts or at least to sell some parts separately:


You have one or more high priced components on it that are still nearly new and unused, or
there are some (older) components that are no longer available from the manufacturers but make a high price even when bought second hand as they are required to repair an otherwise still working bike (imagine 7-speed shifters from the former higher priced component groups such as Shimano XT to replace a damaged one).