I had one published last night which had racked up three user reads, 100% read ratio, all with highlights and comments. So 3 perfect scores, all clocked in the 'monthly stats' by midnight.

Earnings: $0.01, so that's a third of a cent per read, even if you hit every single bell. or less. It could have been $0.051 rounded up, or a sixth of a cent per read.