1% of all proceeds go to EarthJustice, a non- profit dedicated to environmental protection. Our goal with every sale is customer satisfaction and unbeatable customer service. So please buy with confidence, after reading the full description. Shipping is expedited as it is fulfilled by Amazon who provides the tracking number and provides the first layer of customer service support. Quality of Used book: Very Good - Clean cover, pages are tear-free and not marred by notes or highlighting. The spine is not damaged. For Textbooks there will be minimal to no highlighting, underlining, and notations, but no guarantee of supplemental CD's or accompanying materials. Don't hesitate to write any inquiries you might have, before or after the sale.