The total cost to you to borrow the book should be less than $1 (This is including: $0.37 stamp to mail the check and ~$0.40 for other incidentals like the envelope to send in the check, the cost of the check itself, a piece of paper for the signed agreement, and an optional mailing label) (US addresses only).For non-US residents, the terms differ, but still at a minimal cost to you.