How to calculate the cost of a custom article on the site?

Question

contextual advertising

Hello. I have a small resource where I post various how-to's for Android or Windows/Linux phones. Various fine-tuning or useful articles on working with software. The resource is small, about 300 unique visitors per day. 9-10 thousand per month. Recently, they began to write to me with a proposal to place a review on software, a resource, or something similar. At first, I avoided all this, but lately such letters began to fall into the mail quite often, and most importantly, some requests fit the theme of the site. I would like you to help me how to calculate the cost of posting such articles on the resource. I am far from SEO, advertising and all that. I have never used author exchanges, I have never bought links and advertising. I don't know how much it might cost. Maybe 100 rubles, or maybe 10,000, seriously. Or maybe it's not worth it at all and it's not worth paying attention to such letters. I don't know.
The article is written by me, the size is very small, I am not a copywriter who gives birth to pages of text out of thin air. Somewhere around 300 words and a dozen screenshots. Article only on the site. If you need any more information, I can share it.
Thank you.

Answer 1

Yes, it's not worth it. It was not the authors who wrote to you, but the copy-pasters.

Answer 2

yes, take something from the ceiling to bathe, for example 1000.
good price

Answer 3

Yes, everything is simple. Check the text for uniqueness with the text.ru service, if the uniqueness is over 90%, take the text and publish it on your own. Price or free, such as your service, their content, or an average of 160 rubles per 1000 sim. Or look at the same text.ru prices for similar articles.
Something like this)

Answer 4

Firstly, I didn’t quite understand, do you have to pay or you?)
It’s like writing articles, but some kind of blurry text came out) Specify this point