Lots of good advice here!
The idea that a person can build a gun and ask $3000 for it sounds intreguing however, unless you have a recognized name your not going to get anyone to pay that kind of money for your work.
Playing with Steve's numbers a bit, lets say you buy the parts for only $600 (180 barrel, 100 lock, 35 trigger, 170 stock, 30 butt plate & trigger guard castings, 25 patch box, 60 msc parts and finishes). Lets say your fast too. 180 hours to build.
Now, when you start trying to sell your finished gun, I can tell you first hand you will be lucky to get $1200 for it. (Your unknown, remember?)
This ends up with (1200-600)/180 or $3.33 an hour.
You can make more than that asking folks "Did you want Frys with that?".
Folks who have examined the guns I've built all say things like "...excellent...", "...some of the best I've seen...", "...you really ought to go to 'Vegas'! I've seen guns not nearly as nice go for a lot more than your asking!"
but , not one of them wants to buy them.
Oh, I take that back. One guy about broke his arm reaching for his wallet when I said I would sell the first gun I built for $800. (I wanted the money for a Uberti High Wall).
As was said, 'You have to build them because you love building them'. That makes having them when your done a lot easier to live with.
zonie