eureka seven box sets and light novel

im looking to collect all the box sets and i know 1,3,5,6,7,9,10, and 12 exist. although box set 1,10, and 12 are pretty hard to find online no matter where i look. so what about box sets 2,4,6,8, and 11? do those sets not exist?

also are the light novels and new world manga two different things or are they not the same thing?