TechSoup is an online product donation service that connects nonprofits with technology product donations from more than 20 leading hardware and software providers. All products are available either for donation, or for prices that are deeply discounted just for nonprofits.
TS serves 501(c)(3) nonprofits, public libraries and Canadian nonprofits and charitable organizations. TechSoup Stock charges an administrative fee for each product, which is typically a%age of the product’s published retail value. This fee covers handling, ground shipping and customer support. TechSoup Stock offers only high-quality computers formerly used by large corporations. These are machines that typically are phased out after two to three years of use and are in very good condition.
Info: http://www.techsoup.org/joining-techsoup (for additional information).