public function init() {
		// Load the settings.
		$this->init_form_fields();
		$this->init_settings();

		// Define user set variables.
		$this->title        = $this->get_option( 'title' );
		$this->availability = $this->get_option( 'availability' );
		$this->countries    = $this->get_option( 'countries' );
		$this->tax_status   = $this->get_option( 'tax_status' );
		$this->cost         = $this->get_option( 'cost' );
		$this->type         = $this->get_option( 'type', 'class' );
		$this->options      = $this->get_option( 'options', false ); // @deprecated in 2.4.0
	}