Planesrunner, first book of the Everness Series by Ian McDonald, is 1.26€ at Kobo (at least from Spain):
http://www.kobobooks.com/ebook/Plane..._cR55AbVTA&r=1
I already had the print version of this one, but with the 50% coupon it's only 0.63€ and I couldn't resist buying it again (I'll most surely get rid of the physical book, now).