I don't think we'll ever see $100 per BTC again, if it would I would buy a lot more 
Well, if that price will show up again, we need to evaluate first if it's still good to buy, we do not know what will be the market that time so we cannot just say we will buy and expect the price will rise again.This time, the price of bitcoin is really far from the $ 100 price. if you're really waiting for bitcoin prices dropped to $ 100, I think, you're going to wait for it for life, because I am absolutely convinced, bitcoin prices will not arrive at that price again.
I hope so because I do not want to see that price again, I'm happy with the current price and the price movement which seems it will continue to increase and will hit the all time high. Only if there is a bad news where we will see the price to abruptly fall.