
The industry standard for US based writers working for companies - as far as I know - is between $12 and $20 per page. In most cases the higher end of the scale is reserved for a few top writers and/or the most urgent orders. Almost all of these writers have advanced degrees.
Private orders are anywhere between $20 on the low end (for new and ESL writers) to $40+ for the most experienced writers. $10-15 per page is definitely well below the market at the moment, so good luck with that.
Finally, working for $5 per page is not worth the time, especially if you live in the US or any modestly developed country, since you'd have to write about 40 pages every day to make the median salary, which is absurd.
So, either you live in your parent's basement and have no expenses or taxes, or you have no math skills whatsoever to understand the costs of life and doing business. If you did, you'd lay off anything below $20 (if you're as good as you say) after a month or two in this industry.
This means one of two things - a) you're completely new and never written a paper for money before or b) you're not new but you're tired of writing for nothing but don't know how to set off on your own.