What are the ad aggregator monetization options?

Question

Monetization

I am developing a site-aggregator of ads for the sale of used cars. The site will be essentially a one-page application - a form with the necessary fields (brand, model, price, etc.) and a table with the output of the results. After specifying the necessary parameters and submitting the form, the list of sites with ads will be parsed (or requests to apishka, as I can agree with the site owners), sorting and displaying the results. I do not plan to store the received data (but short-term caching is possible), because declarations are perishable entities and need to be displayed fresh.
Benefits for users - convenient search interface; the aggregator does it for them
Benefits for site owners - additional traffic
What monetization options do I see so far:
- Affiliate program, payment for
clicks - Unobtrusive advertising
- Paid features for interested users (for example, daily collection of fresh ads and mailing in Excel format)
What other options can there be? Or is the idea rotten and I'm in the clouds?)

Answer 1

everything is so
in fact - adsense and payment for clicks by boards

Answer 2

1. I would add a paid smart filter to the alert setting.
The thing is necessary and useful for those who make money on it.
2. Paid monthly subscription to the API (add functions that are not in the regular web)