var price;
if (
(responseData.item.offer_price > 0) &&
(responseData.item.offer_price < responseData.item.sale_price) &&
(new Date(responseData.item.offer_start) < new Date()) &&
(new Date(responseData.item.offer_end) > new Date())
) {
price = responseData.item.offer_price;
} else {
price = responseData.item.sale_price;
}

dataLayer.push({
'event': 'AddToWishlist',
'addToWishlistProduct': {
'sku': responseData.item.sku,
'title': responseData.item.title,
'stock_quantity': responseData.item.stock_quantity,
'price': price
}
});