Customer Purchase Latency is a measurement of the delay between customer purchase events (orders). It's in the form of a time, usually a number of days. So a 30 day Customer Purchase Latency means 30 days pass between orders.
This is usually aggregated across all of your customers into Average Customer Purchase Latency.
Eric Davis
Is your customer acquisition spending too much?
If you're spending more to acquire a customer than they are worth, you're at risk of going out of business. Check how much you can expect your Average Customer.