Examples and Contract Type Classes can be found on GitHub included are two helper clases to aid in your integration.

Example code:

using Integral2uMoneyContracts.V1;
//You rapid API Key should not be made publicly visible
//Search appsettings or environment variables
var rest = new Integral2uRestApi("[Your rapid API Key Here]");
var restResult = rest.DiscountFromRetailNet(1.0, 0.5);
Console.Out.WriteLine(restResult);
Console.Out.WriteLine(rest.RetailFromNetDiscount(0.5, restResult));

//You rapid API Key should not be made publicly visible
//Search appsettings or environment variables
var http = new Integral2uHttpApi("[Your rapid API Key Here]");
var httpResult = rest.DiscountFromRetailNet(1.0, 0.5);
Console.Out.WriteLine(httpResult);
Console.Out.WriteLine(rest.RetailFromNetDiscount(0.5, httpResult));

Console.In.ReadLine();