Q:

Can I ask a question about Drupal's third-party module that is not technical? 

Recently, I have started working on a commerce payment module (Commerce Pasargad).  Now I am looking for a way to put it in Drupal Commerce Free Extensions page, but I didn't find any, so far. 
Can I ask similar question on Drupal Answer website? 

A:

I doubt it, Drupal Answers has no official affiliation with the Commerce Guys as far as I'm aware.  The question would be (at best) too localised for this site. 
There are guidelines on drupalcommerce.org detailing how you can get in touch with them to contribute code/modules/themes/etc.  That would probably be the best place to start.