Is there a level when choosing publishing space prices ?

I wonder how people ask for revenue and at what lever of pricing. It is interesting on how others follow that price. Or are the buyers the ones that make the prices for the publishing spaces ?

What is your point of view over the matter ?

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I am working on SEO/SEM industry for quite a while, so you can find me most of the time in the
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section of the forum!

it is concerned on sellers , sellers analyze the requiremnets of buyers and sell as what they want .

It is very fair to publish the price to evaluate the space according to the standard.