Paladin79
Previously MOT: Cables For Less
This is a very thought out answer. I have seen basic ones fetch $450 to $500 but some have extra tubes. Hopefully a quartered oak furniture grade cabinet and copper helps but just cause I like the idea does not mean everyone will.The stock ones go pretty quick on ebay, though there are alot of 'em right now. Adding artistic flare as you are talking about could increase the price but require the right buyer, and as such make it a longer turn around. It's a pretty popular amp and there alot of people who simply don't want to build it ( so sad for them ).
If I do not end up with an extra amp I may just sell the cabinet ready to go for someone to upgrade their kit or finished amp.