WooCommerce - Show price on add-to-cart button

<?php
  // WooCommerce - Show price on add-to-cart button
  // credit for most of it: LoicTheAztec
  add_filter( 'woocommerce_product_add_to_cart_text', 'custom_add_to_cart_price', 20, 2 ); // Shop and other archives pages
  add_filter( 'woocommerce_product_single_add_to_cart_text', 'custom_add_to_cart_price', 20, 2 ); // Single product pages
  function custom_add_to_cart_price( $button_text, $product ) {
    // variable products
    if( $product->is_type( 'variable' ) ) {
      // shop and archives
      if( ! is_product() ){
        $product_price = wc_price( wc_get_price_to_display( $product, array( 'price' => $product->get_variation_price() ) ) );
        return $button_text . ' - From ' . strip_tags( $product_price );
      }
      // single product pages
      else {
        return $button_text. ' - From ' . $product->get_variation_price( 'min' );
      }
    }
    // all other product types
    else {
      $product_price = wc_price( wc_get_price_to_display( $product ) );
      return $button_text . ' - Just ' . strip_tags( $product_price );
    }
  }