I could sell them as populated. I don't advertise that, there are too many variations as to the parts that make up the board.
The ones I've assembled have been for specific projects.
IC Sockets? Male/Female headers? LED colors & brightness? Right angle or straight FTDI connector? Power connector type?
Same for the 'LED support' board.
I suppose a generic board with up to 81 cathode current limit resistors, 9 PNP or P-channel parts, and 9 gate/base pullup resistors could be put together.
(base current limit resistors too?)
Basically just not enough hours in a day for all the projects I'd like to do.