private List <ListingCard> Reverb()
        {
            List <ListingCard> listingCards = new List <ListingCard>();
            List <Listing1>    liveListings = manager.GetReverb("https://api.reverb.com/api/listings?query=guild s4ce");

            foreach (Listing1 listing in liveListings)
            {
                listingCards.Add(new ListingCard()
                {
                    id            = listing.id.ToString(),
                    title         = listing.title,
                    description   = listing.description,
                    condition     = listing.condition.display_name,
                    price         = listing.price.amount,
                    published_at  = listing.published_at,
                    photo         = listing.photos.Select(p => p._links.large_crop.href).FirstOrDefault(),
                    listingLink   = "https://reverb.com/item/" + listing.id.ToString(),
                    resourcePhoto = "reverb.png"
                });
            }
            return(listingCards);
        }