From the announcement:
To celebrate the return of USEME Zombie Dawn to our shelf of publications we have a short term offer for you. Purchase this 'Z Deal' and we will send you a copy of UM009 and also a pack of HOT21 Zombie Horde along with it for only 6.25GBP.
That is a saving of 30% off list prices!
So you get:
UM009 Zombie Dawn (A6 Booklet) 3.50GBP
HOT21 Zombie Horde (16 Miniatures) 4.00GBP
for only 6.25GBP