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I agree with Egol. If you are worth of being paid USD 180 per hour, then you don't need to sell your work, you can make money out of it easily.

In my past experience, I've seen people writing for USD 10 per hour, the quality is OK but you need to improve the text before posting. Anyway, as a content creator myself, this week I decided not to pay anymore for any content. Creating value is more important than quantity, even for SEO, as I have been noticing.

About the PPC:

There is psychological effect on being on both PPC and top organic ranking. Also, on searches for terms with high intention of purchase, PPC has significant more clicks than organic positions. Google is displaying more PPC now than ever so most people won´t just scroll down to see the organic results.

You should consider this before you really turn off the PPC. If you already did this, then good luck and congratulations for your results.