Write a small affiliate program

Hey, everybody!

You need a script of a small affiliate program "turnkey".

The main features of the script for admin:
- addition of the goods;
- loading of the goods sold;
- review of statistics on goods;
- viewing / activation / editing partners;
- formation of a report for payments to partners.

The main features of the script for the partner:
- registration form with the entry of the invitation code;
- goods inspection;
- formation of a partner link;
- reviewing statistics;
- ordering payments.

The main features for the buyer:
- clicking on the product page via the partner link;
- purchase request;
- payment through a payment aggregator;
- Receiving a reference to the purchased goods.

The script is needed in pure PHP, without FrameWorks, CMS, etc.
I am waiting for proposals on cost and time.