1. What is Cost Per Reach (CPR)?

Cost Per Reach (CPR) is a marketing metric that calculates how much it costs to reach one person with your advertising on Amazon. It helps advertisers measure the efficiency of their ad spend in terms of audience reach.

2. How Does the Calculator Work?

The calculator uses the CPR formula:

Where:

• \( Cost \) — Total advertising spend (in currency units)
• \( Reach \) — Number of unique people who saw the ad

Explanation: This simple division gives you the cost to reach each individual person with your Amazon advertising campaign.

3. Importance of CPR Calculation

Details: Monitoring CPR helps Amazon advertisers optimize their campaigns for maximum efficiency. A lower CPR indicates you're reaching more people for less money, while a higher CPR may signal the need for campaign adjustments.

4. Using the Calculator

Tips: Enter your total campaign cost and the number of people reached. Both values must be positive numbers (cost > 0, reach ≥ 1).

5. Frequently Asked Questions (FAQ)

Q1: What's a good CPR on Amazon?
A: A good CPR varies by industry and product type, but generally, lower is better. Compare your CPR to industry benchmarks and your campaign objectives.

Q2: How does CPR differ from CPM?
A: CPM (Cost Per Mille) measures cost per 1,000 impressions, while CPR measures cost per unique person reached, making CPR a more accurate measure of audience penetration.

Q3: Can CPR help with budget allocation?
A: Yes, by comparing CPR across different campaigns, you can identify which campaigns are most efficient at reaching audiences and allocate budget accordingly.

Q4: How often should I calculate CPR?
A: Regularly monitor CPR throughout your campaign to identify trends and make timely adjustments to optimize performance.

Q5: Does Amazon provide reach data directly?
A: Amazon Advertising provides reach metrics in their reporting dashboard, which you can use with this calculator to determine your CPR.