Originally Posted by dobry_den

Too many confounding factors.

For instance, 10k uniques alone doesn't really say anything. How many impressions do those uniques turn into? If it's 10k uniques and 10k page visits, then we know all 10k uniques were either garbage traffic or the site doesn't convert.

My top performing (per-unique) website makes about $1 RPM ($1 per 1,000 impressions). My weakest performing website makes $0.35 RPM.

On my top performing website, 10k uniques translates into 210k impressions since each unique visits an average of 21 pages per session. That means 10k uniques makes me $210.

My weakest performing website will have about 13k impressions for 10k uniques making me a whopping $4.55, worse than OP.

This data still isn't interesting until I reveal that my weakest performer receives 500x the traffic of my top performer and it's what pays my bills.