One way to increase sales is to give each new customer a one-time offer.
A discount is a typical option but it can be a bonus or free gift too. As long as it's something valuable.
You could make the offer conditional too, in that it'll only apply on purchases over a certain amount which you set based on your Average Order Value. e.g. If your Average Order Value is $34, make the offer apply on orders over $45.
This offer might help to convert customers who are on the fence or comparing you to a competitor.
Something to try out over the next couple of months.
If you haven't installed Repeat Customer Insights yet, it's an easy way to get a detailed look at your customer behavior, including the different Average Order Values for new and repeat customers.
Eric Davis
How do your products determine customer behavior
In Repeat Customer Insights the Customer First Product analysis will measure customer behavior based on the products each customer first ordered.