but why setup $10 a day buy. buy it at once and forget it until next block halve?
This way he can buy it at all sorts of prices incase he buys $x,xxx & then the price does nothing but go down for the next year - minimizes his losses (And gains)
That and also maybe he can only afford to take out $10 from his earnings everyday safely and by current price, he'd be able to get 1 BTC in about 25 days. So not a bad plan at all.