[1] In order to offer you plagiarism checks as cheap as possible fees are based on the "fair use" principle. If used too excessively, check accuracy decreases slowly (beginning at the respective amount of words checked in one year till a minimum accuracy is reached after that amount plus 25 percent checked words). If you are honest with your usage model choice, we have already calculated a limit that will not be exceeded based on our experience with current customers. If this happens nonetheless you will be warned by our system in time and are able to change into an individual pricing model at any time.