If you don't care about extras(episode commentaries, a couple discussions from the ADR director and manga panelist, animatics, an interview with Tiffany Grant) then get the Platinum thinpak from Amazon. You should also get End of Evangelion as it is a masterpiece and better than the whole TV series but you might want to check your local used stores for it since it seems there aren't any good deals for it at the moment. If you want the extras for the TV series, then Rightstuf has all of the Platinum singles for $8 each.