Camera is hugely important to me, as is web browsing performance - the two tasks I use my phone most heavily for. In fact, these are the only two reasons I jumped from my iPhone 6+ to the 7+. You can find a decent phone for $400 these days, but there's always tradeoffs and I'm not willing to compromise (and to be honest, I have an investment in the Apple ecosystem, so unless I plan on figuring out an entirely new workflow there's not much choice for $400 phones right now).