An ecommerce CRO agency typically charges based on the scope of work, the size of your business, and the services they provide. On average, here is what you can expect: Hourly rates: $100 to $300 per hour Project-based fees: $5,000 to $50,000 per project, depending on complexity Monthly retainer: $2,000 to $15,000 per month for ongoing optimization Prices vary widely, so discuss your specific needs and goals to get a tailored quote.