Visitor visa documents list Plz

[apk1928]

I would like to appy for extension to my in-laws. I got all the info from valuable postings except one. That is for I-539, how much fee I have to send. Is it $300 for both my in-laws, or for each it is $300.
When I checked the form I-539. It has supplemental form to add the other applicants for extension, so I feel like just $300 is enough for any number of people.
Please clear my doubt.
I am preparing the following documents. Correct me by any adds.

1. Passport full copy.
2. I-539 form
3. I-134 (affidavit for financial)
4. pay stubs
5. bank statement
6. Request letter or extension.

[immihelp]

Have you read https://www.immihelp.com/visitors-visa-extension/?

It clearly mentions that the total fee is $300 even if two people (your parents) apply together in the same form.

Please understand that the primary purpose of this discussion forum is to ask the follow up questions that you didn't get answers from reading the contents on this web site. Most of the common doubts that most people have by reading the government material may already have been clarified in our content.

The reality is that many people just ask the questions that they want to ask, over and over again, without first reading easy material given right here on this web site. There are several people like txh1b who have been helping our community at no charge to you and when they see the same basic question asked over and over again, they appropriately react to the situation and I think it is fair. My friend, the reality is that we often don't get the right and prompt advice even after paying hundreds of dollars per hour fees to lawyers, CPAs and other such service providers. Therefore, you should appreciate all the help you are getting for free from this forum and this web site and thank everyone who is answering your questions for free.

I hope that helps.

[apk1928]

I said Thankful to all who helped me to clear my doubts.
I couldn't find any where in immhelp the fee details, whether it is $300 for both or single person. The Fees link is being taken to USCIS one, and it was mentioned as $300..but not any other details like for how many etc.
If I found the fee details on website then I wouldn't even asked this. I didn't post this just for timepass, I really need the info.
Anyways Thank you very much for your great help to all for your great and reliable free service.
Really I wouldn't get this help and suggestion by spending thousand dollers.
Thank you very much once again.

[immihelp]

Under 'Documents' section on https://www.immihelp.com/visitors-visa-extension/, look at second line. Read the line just above 'Fee Details', before you click that link.

It says " Even if a spouse/children are also included in the same form, the total fee is to be paid just once and there is no extra charge for additional applicants. There is no biometric fee."

I hope it is clear now and you are able to find it.