On my 1099-B box 1e is blank is that supposed to be the amount that I originally purchased the stock for ie. if I bought 100 shares at $100 box 1e should be 1,000?

Box 1e is used to report the cost basis for the stocks sold  Not all brokerages report the cost basis in box 1e. You will enter the total amount you purchased your stock for in box 1e.

 In your question if you bought 100 shares at $100 each then you will enter $10,000 (100 x $100 = $10,000) in box 1e.