by Skiva Technologies
You should add $25 each for additional SmartQuads (same price for all backers). If you are international backer please add $10 for each additional SmartQuad for shipping.
So, in your case it will be ($20+$25)+($25+$10)=$80.
@creator So as a Super Early Bird, to add an additional unit (for International delivery), it will be ($20 + $25) + ($20 + $10) correct?!