How much do you charge for a Facebook group

Hi guys!
I'm new here so sorry if that's not the right place to post this. I couldnt find more relevant forum.
Basically my question is the following:
I have a potential client who wants to grow her Facebook group to 10 000 members. Right now there are some 20-30 members.
I was thinking of using the traditional method of adding friends from other relevant groups and inviting them to join hers.
However, we are having some price negotiations. My question is, how much would you normally charge for a Service like this? Since Im relatively new I dont exactly know what price would be reasonable both for me and her.

You are pertaining to social media management. Virtual assistants can do that job and they are paid by the hour. You can use that as a basis.

ContentWriter said:

You are pertaining to social media management. Virtual assistants can do that job and they are paid by the hour. You can use that as a basis.

Click to expand...

Not the correct way to estimate this. This involves use of accounts with good number if friends. Should be paid higher .

krishnaverma said:

Not the correct way to estimate this. This involves use of accounts with good number if friends. Should be paid higher .

Click to expand...

That's why I said the OP could use it as a basis. Some freelancers are pretty pricey, mind you.