In the classifieds section of the local newspaper it's quite common to see "Over $30,000 invested, you can have it for only $10,000!" or some such in an ad for a custom car.

The truth is the vast majority of people who customize cars do it for fun, knowing that they can never get their money back out of it. When they want to start a new project they end up selling their old project at a huge loss.

It sucks, but people who are into custom stuff tend to like to do the cusomization themselves, or at least direct the customization. They tend to be not so interested in customizations dreamed up by someone else, unless that someone else is famous.