gadget gangster seem mostly into Propeller stuff, do you know if they are interested in Arduino-based projects?
The alternate approach would be to start an own business. However this seems like really a lot of work that would distract me from further design.
In the photography game people generally aspire to opening a gallery and selling their landscape (or whatever) photographs. I know many people who have doen that (myself included) and let me tell that you will hardly ever get out to do the thing you loved to do in the first place. Unless you grow to the point of having a manager you'll spend all you time dealing with accounts receivable, accounts payable and (my favourite) accounts forgettable.
I see no reason it would be different selling electronics.
I to may find myself in this situation soon (if I ever get my projects finished
), there's no way I want to deal with making 100 boards, packing orders etc. I could possibly handle selling just PCBs but that will limit the market a LOT I suspect, especially with all SMD components.
Personally I like the R&D part, the rest is not interesting which I guess explains why I have bugger-all money.
Opening up a business, on the other hand, may have tax benefit, depending on your state and local tax laws.
That's true probably in most countries. Here in Aus they will allow you to do that for a few years but if you aren't showing a decent profit at some point and are still claiming expenses (which can be "negative geared" against other income as well) they decide you are taking the piss.
I like the Gadget Gangster model, 20% is plenty IMO if it allows you to get on with the fun stuff.