Here at Perkology we still manually inspect and grade each and every book that comes into our warehouse to ensure that you know exactly what to expect when you receive your second hand book.

The criteria that we use to grade used books are as follows:

Like New: an apparently unread copy in perfect condition. Dust cover is intact with no nicks or tears. Spine has no signs of creasing. Pages are clean and not marred by notes or folds of any kind. Books may contain a remainder mark on an outside edge, but this should be noted in the listing comments. Any accompanying CDs or DVDs must be present.

Very Good: a copy that has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Any accompanying CDs or DVDs must be present.

Good: a copy that has been read but remains in clean condition. All pages are intact and the cover is intact (including the dust cover, if applicable). The spine may show signs of wear. Pages can include limited notes and highlighting, and the copy can include "From the library of" labels. Books may have any accompanying access codes for additional or replacement content missing or redeemed.

Acceptable: a readable copy. All pages and the cover are intact (the dust cover may be missing). Pages can include considerable notes – in pen or highlighter – but notes cannot obscure the text. Books may have any accompanying access codes for additional or replacement content missing or redeemed.