I think at this time, it's very impossible for that to happen. Right now, the lowest price that bitcoin has drop is $1000 based on its chart. If I were you, buy bitcoin now because its value will be double or tripled sooner.
maybe it will happen armpit bitcoin will die, while the end of the bitcoin price will gradually fall and past $ 100. and I'm sure you were not going to want to buy bitcoin at that price. but it will happen hundreds of years to come Lol
If the price of bitcoin falls that low in future then there will be many people who will start loosing their faith in bitcoins and won't be interested in investing in it anymore as they will be have a feeling that its an end of bitcoin era and it will not bounce back again.