#00000488

/**Mycred restrict purchase if points are not enough**/
add_filter( 'woocommerce_is_purchasable', 'mycred_deny_add_to_cart_if_insolvent', 10, 2 );
function mycred_deny_add_to_cart_if_insolvent( $purchasable, $product ) {
	// Make sure myCRED is enabled and the product is purchasable
	if ( ! function_exists( 'mycred' ) || ! $purchasable ) return $purchasable;

	// Only applicable for product with the ID 123
	if ( $product->id != 123 ) return $purchasable;

	// Current Users ID
	$user_id = get_current_user_id();

	// Load myCRED
	$mycred = mycred();

	// Exempt Administrators from this rule
	if ( $mycred->can_edit_creds( $user_id ) ) return $purchasable;

	// Get price
	$price = $product->get_price();

	// Get users balance
	$balance = $mycred->get_users_balance( $user_id );

	// If balance is lower return false.
	if ( $balance < $price )
		return false;

	return $purchasable;
}