If the person making this statement can make boards for EUR 20.- each
we'd be delighted to buy from him. For sure such price would be possible
when making 100,000+ boards. We do runs of 100, we have to pay for
electronics recycling (WEEE) registration, we pay tax, etc. I am sure
hobbyists only doing a few boards can get around such things, we can't.
Well, I'm a hobbyist... And I know the cost of making electronic
prototypes...
My 'rule of thunmb' is to add up the cost of the main xomponents (major
ICs, etc) and multiply by _three_ to cover things like connectors,
prototyping board, passibves, etc. And that ceosn;'t inlcude the
(non-zero) cost of soldering it, or my time in putting it together.
Having had a brief look at your scheamtic, I couldn't turn one out for 20
Euro. Period.
-tony