using System;

using System.Threading.Tasks;

public class Program

{

    public static async Task Main()

    {

        var client = new Gw2Sharp.Gw2Client();

        var items = await client.WebApi.V2.Items.ManyAsync(new[] { 78599, 70093 });     

        //var items2 = await client.WebApi.V2.Items.ManyAsync(new[] { 78599, 70093 });      

​

        foreach (var item in items)

            Console.WriteLine($"{item.Id}: {item.Name}");

        var prices = await client.WebApi.V2.Commerce.Prices.ManyAsync(new[] { 25652 });

        foreach (var price in prices)

            Console.WriteLine($"{price.Id}: Sells {price.Sells.UnitPrice}");

    }

}