What criteria should be followed when buying a VK group?

Question

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I plan to buy several VK groups with a sports theme.
Please share your experience, what to look at first? (The question is more about group indicators)
For example, what should be the approximate average reach, as a percentage, to the number of subscribers?
The number of subscribers in each 10K is 50K.
Thanks in advance for any information provided.

Answer 1

With such questions, I will advise you to refrain from buying