With Our Classify we have 2 type of ads.

1- Regular Ads: User just need to register on your website and user can post Regular Ads(Free Ads), But We have Option in backend so Admin can Turn Of Regular Ads if admin want.

2- Premium Ads: User Must need to Purchase plans for these ads, and these ads will be shown on Premium Places, Like Top Carousel Slider on All pages, Premium Widget. If Admin don't want to use PayPal Then Admin can also receive payment in bank or any other way and admin can assign any plan to any user by editing user profile.

Assign Plan to user: Please go to WordPress Dashboard --> All users --> From here edit that user profile --> Scroll down and you will see option to assign plan. Select plan from there and update profile.

Note: You can Turn OFF regular ads(free ads), if you don't want to allow user to post free ads.

Also visit this ticket : https://joinwebs.ticksy.com/article/2564/