They sell in UK at first, than in Finland, and other eastern europe, now in Japan. Everywhere under local brand (Orange, O2 e.t.c.). The US sales planning to start in summer. I think they will get fully worked and bug free firmware to this moments, thanks to community and github open source.
p.s. and yes, there were a big number of returns, but due to really large number of sales, it's not a problem, especially after firmware updates.
p.p.s. do you remember that when EE sales started they also have terrible problems with touchscreen and low batter life? And seems it doesn't stop anything