This feature is perfect for a marketing strategy, by showing a higher price compared to the actual price of the product, you'll give your customers a better feeling of purchasing that product.
This feature is already active from the starter package
To set this up
Get in your Ordering Dashboard, inside a product, activate "Regular Price" Feature, and put the price that will be crossed on the front-end, save and view it.
This is how it looks in your front-end products.
As Always, Happy Ordering.