Damn, Nokia3310, that's great! I just got into using adwords and would love to have that ctr as an advertiser.
That depends on where your visitors are coming from. US, UK, Canada and other top countries pay more compared to Pakistan or India for example. Also depends on keywords for the ads
All my visitors are coming from Israel, tier 3 country. I can tell you that in the past, most of the clicks was $0.7 and all from Israel..