Amazon echo is about 179 right now. I'm really hoping google can get this to be about 100 - 125. Based on their history of low cost devices with the two chromecasts, I think its possible.
They'd only need to be friendlier to international buyers than the Echo (which you can use elsewhere, but with some mucking around) and they'll do well.
The best and easiest features of Amazon Echo don't need the most difficult local support. Things like the shopping list sans buying, timers, weather, timezones, traffic, etc.