Opening bid is three million dollars, but translater´s "partial" and some comments in current press seem to indicate that new text, still in German, may come out. The envelope is being sold with the letter. It has a 3 cent stamp on it. I don´t know US postage, but if first class stamp now costs 36.45 cents, then the 3 cent stamp Einstein sent his "God letter" with 58 years ago implies 4.4% annual inflation. [3x(1.044^58)] = 3x12.15)
I love reading Einstein's letters before going to sleep. He was probably angry with God do to the hypocrisy of religious leaders around him.