Well you don't have to buy a whole bitcoin if you want to invest. You can buy fractions of it as well. Besides, the price itself of the coin is relatively irrelevant, what matters is whether the price will go up or down.

Yes, you can always invest the amount you are comfortable in and buy fraction of Bitcoin. When Bitcoin price rise, your investment grow as well. I believe 1 BTC is out of reach for many people, so buy 0.1 or 0.01 BTC whichever you can afford.

I agree with buying a fraction of Bitcoin because the current price right now is just too high. How about going for altcoins as well? there are a lot of altcoins that have potential to grow. Look for hidden gems in the top 20 altcoins.