Not sure whether to combine this book with other copies

[Sarah (is clearing her shelves)]

Hi all, I have a copy of The Breaker by Minette Walters, it also has a copy of the short novella The Tinder Box as a bonus. I'm not sure whether this copy should be combined with the other copies of The Breaker or not. Thanks for your help.

[Paula]

Combine, the addition of the short novella does not make it different enough to keep separate.

[Sarah (is clearing her shelves)]

Thanks a lot Paula.