The listing is for books 15-21 from the Horus Heresy series:
#15 Prospero Burns
#16 Age of Darkness
#17 The Outcast Dead
#18 Deliverance Lost
#19 Know No Fear
#20 The Primarchs
#21 Fear to Tread

The books are in very good used condition. The price is set and I won't respond to questions about selling these individually.

I can ship packages starting from Dec 30 due to the holidays (Mon-Wed, usually). I use Omniva (Estonia Post) to ship items.