Borders online bookstore’s Rewards Program is offering $10 in bonus Border’s Bucks when a consumer upgrades to Borders Rewards Plus for $20.

The bonus Border’s Bucks are redeemable during one week only, from April 22 to April 28.

In addition to the extra $10 in bonus Bucks, shoppers will receive other benefits and savings. Here are some of the deals that shoppers can expect to see.

40% off the list price on any hardcover bestsellers. This list includes “Sing You Home” by Jodi Picoult and “A Discovery of Witches” by Deborah Harkness.

20% off the list price on selected hardcovers. This list includes “Twighlight’s Dawn” by Anne Bishop and “Moonwalking with Einstein” by Joshua Foer.

10% off nearly everything else in the store. This includes just about everything in both locations and on the website, including “The Lost Hero” by Rick Riordan, AMC’s original television series “The Walking Dead” season 1, and any food or beverage in the Borders Cafe.

Shoppers who make this upgrade inside a franchise location will also receive a coupon book with over $100 in savings, according to Borders site, at borders.com.