I have 2 websites for 2 different projects and i asked prices for posting on Cointelegraph.com with 2 different email addresses.

I see that they visited both my websites after my request and than i get 2 different price offers!

How is it possible?

Do they base their price by the potential budget of the clients?

For a press release they charge $499 and this is ok.

For an header banner they offered $15000 per month in one mail and $13000 per month in the other mail address.
Sidebar banner on the main page - $8000 per month and $5000 in the other and so on...

I understand that a company can ask any price but i don't think is fair giving different prices to different clients.
Has anyone experienced the same?