The bluray of Close Encounters of the Third Kind is on sale at Bestbuy.com for $7.99. Also qualifies for free shipping. To my knowledge there is only version of this out on blu ray and it's a 2-disc box set which includes 3 different versions of the film.
http://www.bestbuy.com/site/Close+E...=close encounters of the third kind&lp=3&cp=1
http://www.bestbuy.com/site/Close+E...=close encounters of the third kind&lp=3&cp=1