I had in mind 10% of net sales, but its up to the individual company or user. Its a charitable donation, not a licence or a royalty.
We are a small team, and have better things to do than policing royalty payments and so have the possibly naive belief that if we treat our users well and honestly, they will do the same with us.
If you could obtain large supplies of stickers (or outsourced them) I think it would an idea for case makers to put an official r-pi sticker on each. If the Foundation could get a range of stickers and maybe some transfers (the ones you stick in warm water and place on the surface) that might take care of any donations and also ensure the logo is perfect. I know some designers would prefer to make the logo a part of the design but I'm sure there would be ample space to add the official sticker.
It would be an option I guess.
- 1BillionHex aka PiOfCube: 68719476738 -