Signifigant will be determined by the final reseller. FiiO gives a suggested price I believe but its up to the sellers to sell at what they want. Then Capitalism takes over. And that is how we won't have one product 2X more expensive on one site. Rest assured.
Yes it does. You can time it to always be on or to turn off in 20s-60s with steps of 1. There is also a hold switch. The screen will not remain on unless the screen timer is set to on and your hold switch is not engaged.
FiiO specified that they wish to do a 3 price point strategy. For example as of right now
E02i / E6 / E11
E7/ E70K /E17
So that the consumer can pick and choose which one fits into their price points.
Initial thoughts on it are that it does produce a bit of noise on most of my IEM's.