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There are no sales in the websites. its purely content oriented with text based articles and photo galleries.
That's what I would have thought. So you're doing well, considering.
Browse here for tips and experiment with placement, colors, # of adblocks, etc, but you are doing well already, at least in my opinion.
Maybe you meant 10 million pageviews a month, in which case $4,000 a month is a bit low but reasonable, given the niche and the country.
There's something wrong with these numbers somewhere.
There is something really inconsistent with the numbers
You say you earn $4000 per month at $26 eCPM. That means 153,800 impressions put out in a month
153,800 impressions per month means 5,100 impressions per day not 9 million impressions per day? quite some difference
If you really want advice, you really need to give the correct data!