function tribe_tickets_buy_button( $echo = true ) {
		$event_id = get_the_ID();

		// check if there are any tickets on sale
		if ( ! tribe_events_has_tickets_on_sale( $event_id ) ) {
			return null;
		}

		// get an array for ticket and rsvp counts
		$types = Tribe__Tickets__Tickets::get_ticket_counts( $event_id );

		// if no rsvp or tickets return
		if ( ! $types ) {
			return null;
		}

		$html = array();
		$parts = array();

		// If we have tickets or RSVP, but everything is Sold Out then display the Sold Out message
		foreach ( $types as $type => $data ) {
			if ( ! $data['count'] ) {
				continue;
			}

			if ( ! $data['available'] ) {
				$parts[ $type . '-stock' ] = '<span class="tribe-out-of-stock">' . esc_html_x( 'Sold out', 'list view stock sold out', 'event-tickets' ) . '</span>';

				// Only re-apply if we don't have a stock yet
				if ( empty( $html['stock'] ) ) {
					$html['stock'] = $parts[ $type . '-stock' ];
				}
			} else {
				$stock = $data['stock'];
				if ( $data['unlimited'] || ! $data['stock'] ) {
					// if unlimited tickets, tickets with no stock and rsvp, or no tickets and rsvp unlimited - hide the remaining count
					$stock = false;
				}

				$stock_html = '';

				if ( $stock ) {
					$threshold = Tribe__Settings_Manager::get_option( 'ticket-display-tickets-left-threshold', 0 );

					/**
					 * Overwrites the threshold to display "# tickets left".
					 *
					 * @param int   $threshold Stock threshold to trigger display of "# tickets left"
					 * @param array $data      Ticket data.
					 * @param int   $event_id  Event ID.
					 *
					 * @since 4.10.1
					 */
					$threshold = absint( apply_filters( 'tribe_display_tickets_left_threshold', $threshold, $data, $event_id ) );

					if ( ! $threshold || $stock <= $threshold ) {

						$number = number_format_i18n( $stock );
						if ( 'rsvp' === $type ) {
							$text = _n( '%s spot left', '%s spots left', $stock, 'event-tickets' );
						} else {
							$text = _n( '%s ticket left', '%s tickets left', $stock, 'event-tickets' );
						}

						$stock_html = '<span class="tribe-tickets-left">'
							. esc_html( sprintf( $text, $number ) )
							. '</span>';
					}
				}

				$parts[ $type . '-stock' ] = $html['stock'] = $stock_html;

				if ( 'rsvp' === $type ) {
					$button_label  = esc_html_x( 'RSVP Now!', 'list view rsvp now ticket button', 'event-tickets' );
					$button_anchor = '#rsvp-now';
				} else {
					$button_label  = esc_html_x( 'Buy Now!', 'list view buy now ticket button', 'event-tickets' );
					$button_anchor = '#buy-tickets';
				}

				$permalink = get_the_permalink( $event_id );
				$query_string = parse_url( $permalink, PHP_URL_QUERY );
				$query_params = empty( $query_string ) ? array() : (array) explode( '&', $query_string );

				$button = '<form method="get" action="' . esc_url( $permalink . $button_anchor ) . '">';

				// Add any query attribute as a hidden input as the action of the form is GET
				foreach ( $query_params as $param ) {
					$parts = explode( '=', $param );

					// a query string must be 2 parts only a name and a value
					if ( is_array( $parts ) && 2 === count( $parts ) ) {
						list( $name, $value ) = $parts;
						$button .= '<input type="hidden" name="' . esc_attr( $name ) . '" value="' . esc_attr( $value ) . '">';
					}
				}

				$button	.= '<button type="submit" name="tickets_process" class="tribe-button">' . $button_label . '</button></form>';

				$parts[ $type . '-button' ] = $html['button'] = $button;
			}
		}

		/**
		 * Filter the ticket count and purchase button
		 *
		 * @since  4.5
		 *
		 * @param array $html     An array with the final HTML
		 * @param array $parts    An array with all the possible parts of the HTMl button
		 * @param array $types    Ticket and RSVP count array for event
		 * @param int   $event_id Post Event ID
		 */
		$html = apply_filters( 'tribe_tickets_buy_button', $html, $parts, $types, $event_id );
		$html = implode( "\n", $html );

		if ( $echo ) {
			echo $html;
		}

		return $html;
	}