England did get just under 1800 tickets. £35 each. Sections 27, 28 and 29 in the ground.
https://englandsupporters.thefa.com/cfs-file/__key/communityserver-blogs-components-weblogfiles/00-00-00-00-05/2311.Slovenia-v-England-Travel-Guide.pdf
If that link doesn't work you'll find it here https://englandsupporters.thefa.com/b/news/archive/2016/10/04/slovenia-v-england-2016-travel-guide
Also found that Slovenia run free buses to the stadium.