• Click-Through Rate (CTR) – % of people who click your affiliate links.

• Conversion Rate (CR) – % of clicks that turn into sales or leads.

• Earnings Per Click (EPC) – How much you earn on average per click.

• Cost Per Acquisition (CPA) – How much it costs you to get one conversion.

• Return on Ad Spend (ROAS) – Revenue earned vs. money spent on ads.

• Traffic Source Performance – Which platforms are bringing the best results.

• Average Order Value (AOV) – Average amount spent per customer.

• Commission Rate – % or amount you earn per sale or lead.

• Lifetime Value (LTV) – Long-term value of a referred customer.

• Refund & Chargeback Rates – To keep profit and performance healthy.

Yes, with the right strategies and best affiliate marketing programs, PPC affiliate marketing remains highly profitable.