How come I don't see posts of electronics designs for sale on SED?
For example: 'World's Best Audio Amplifier Design Plans' $5.00
'Kilowatt Induction Heater Design' $100.00
'Lead-Acid battery charger' $1.00
Something like the above..
Consider: The company that created DOS sold it to Bill Gates/Microsoft for $75 000.
Also, to my annoyance from Google searches, I bump into these technical papers for sale. Example:
D from BC myrealaddress(at)comic(dot)com British Columbia Canada