The highest I ever paid was ~$510/BTC for about a third of a big one.
Bitcoin is supposed to be for everyone, not just the wealthy, so are you comfortable spending $50 (for example) for less than 0.1btc?
Have you ever paid more than $700/BTC for any amount of Bitcoin?
Yes I have. Back when I was still learning on late 2013 (lost all of them very fast though). And I generally doesn't mind buying at high price unless I feel that there might be better opportunity soon
I haven't bought any bitcoins after the price rally this month however