BTR-3E1 is the latest version of BTR-3U with BM-3 "Shturm" turret and new engine.
Thailand 96units of BTR-3E1 delivered with the price tag of 4 billion Baht, 120units more on order from the Ukraine. The first 2 of 96 BTR-3E1 have been delivered at U Tapao Airport on 17 September 2010. http://www.tanknutdave.com/component/content/article/231