I gave you a few suggestions, all of which take little to no effort to do. Like i said, if you're just the uploader and someone else did all the work porting the model, tweaking the rig and whatnot, then it's not your place to ask for money for this.

THEN HOW AM I SUPPOSE TO DO IT I DON'T EVEN HAVE ANY CHOICE

No, 15-20 is STILL too much for content you didn't even make yourself. Please, have some decency here and don't charge ANYTHING for it.

You can do a number of other things such a posting a tutorial on how to make an OC yourself or putting the template itself on the workshop. Anything but scamming people out of their cash, please.

Hello I would like to commission a model

Sorry about that, I will be editing the bio if you guys are ok.

Sorry for the misunderstanding.

well please don't take your friend's suggestion because $100 is WAY too much for something someone can make for free, this is something you can't charge people for or else they're going to call you out for it, nobody is going to pay that much for this kind of thing, i'm sorry

If you want $15-20 you could just suggest it.

I have to charge $100 because it needs to be fair, my friend suggest it for no reason, sorry.

don't trust this guy.
i made my own Sonic Forces OC using VicenticoTD's Avatar Maker from here: https://youtu.be/C3NiRoJnqhk

And yes, it's completely Free.

Hi, why are you charging people for something they can make absolutely free?

that's a scummy move

https://www.youtube.com/watch?v=C3NiRoJnqhk here's how you make one folks (english subtitles are available) I just saved you from a scam

Hol on, you're charging $100 dollars to rip a character model from Sonic Forces, port it to SFM which isn't exactly hard, and then put it out for others to use for free? $15-20 dollars should all the money you should actually be asking for. $100 is more believable if you actually 100% handmade/modeled these, which you aren't.