The Textbook Rental Service is offering students textbooks at discounted prices during its biannual textbook sale.

Graduate students can take advantage of the textbook rental sale from Monday until Oct. 16, while undergraduates can buy books until Oct. 31.

Throughout the sale students can buy their textbooks instead of renting them or purchase other textbooks at discounted prices.

Amy Richardson, chief clerk at Textbook Rental, said that students buy the books because they may be useful to them later as a reference.

Also, if students rent their books and damage them or do not turn them in at the end of the year, they have to pay the listed price for the book no matter how many times the book has been used, said Carol Miller, assistant director of textbook rentals.

However, during the sale, books are marked down 10 percent for each time they have been used, down to 50 percent, said Miller.

Miller said that the prices depend not only on the times the book has been used, but also on the type of book it is.

“We have everything from novels for English class to organic chemistry books,” Miller said.

Accounting clerk Cheryl West said that last year 75 students bought books at the sale and 189 individual books were sold, bringing in over $7,000.

Richardson said that the book sale “allows us to reorder books in time for the next semester” so that Textbook Rental is not out of books when the next semester comes around.

“We are still getting books in that students need for this semester,” Richardson said.

Textbook Rental sets aside time twice a year for the book sale, usually in October for the fall semester and March for the spring semester.