Increases the number of prices shown in the "Sales and Revenue" report widget to 10.

my_pmpro_admin_reports_max_sale_prices.php

<?php

// Copy from below here...

/**
 * Increases the number of prices shown in the "Sales and Revenue" report
 * widget to 10.
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function my_pmpro_admin_reports_max_sale_prices( $num_prices ) {
	return 10;
}
add_filter( 'pmpro_admin_reports_max_sale_prices', 'my_pmpro_admin_reports_max_sale_prices' );