I know what you mean. I gave away my first hand-made canoe to a charity auction and it only raised them $400. It probably should have gone for $600 or $700, realistically. But, when you spend a ton of time on the creative process it is rare to be appreciated for what actually goes into making something "artistic." However, making something out of nothing, and spending your time creating, rather than consuming is its' own reward - and I know that you know exactly what I mean when I say that. You can not make these kinds of artworks unless you have developed a certain kind of character, work-ethic, and/or philosophy on how to live your life constructively. Having that, as an internal knowledge, is worth more than a few hundred or couple thousand dollars. But, money is nice, too. :D