Add Currency Symbol to the Woocommerce Cart, Checkout, Product pages and archive pages in the format $199.00 AUD (or whatever currency is set in the shop)

currency

function addPriceSuffix($format, $currency_pos) {
	switch ( $currency_pos ) {
		case 'left' :
			$currency = get_woocommerce_currency();
			$format = '%1$s%2$s ' . $currency;
		break;
	}

	return $format;
}

add_action('woocommerce_price_format', 'addPriceSuffix', 1, 2);