A smart investor knows when to abstract out the concept of price when making an investment. Rather than confusing the issue and allowing irrational concerns about how many shares of something one might be obtaining from interfering, it is useful to just consider that you are investing "X" value.
In other words, ignore the price. Say to yourself "I am investing $100.00 in the bitcoin concept", not buying "X" coins. Because the "X" is not relevant.
This is an idea difficult to get to most people looking to invest, I find. I know one or two acquaintances who have issues accepting, say, 200$ per coin as it's simply "too high" in their eyes - not as a full investment, and not in the sense of "unstable" high, but "I can't afford that" high. That coupled with problems explaining divisibility seems to ward away basically everyone - there's some notion that you have "a bitcoin" inasmuch that you have "a 100$ bill" and you cannot split either into smaller parts. True in the latter case, hardly in the first.
Then they ask me about wallets...