It costs us 80 cents to send two stickers to someone. By buying more than 2 you support what we do and get more to give away. :)
Excellent! If you'd like them for your motorcycling or scooter club, or safety school, we'd be happy to work your logo and / or domain into the bottom right corner of the sticker at no charge and point you to some sites that'll print them up for you (just fill out a form and upload the file we give you).
All we'd need is a high-resolution black and white (no halftones or grays) version of your logo to get started. Halftones don't come out well on vinyl stickers & multiple colors or grays are doable but the price really starts shooting up if you go there. Most places charge between $25 for 150 stickers and $150 for 1000 black & white vinyl bumper stickers (the larger the batch the cheaper it gets).