Thanks to the rapid development of the communication networks the internet is available for almost everyone. The internet connected devices such as smart phones, tablets or personal computers are always with us. Using these devices the advantages of the internet are easily useable. Also the online shopping is becoming more and more popular. People can compare the product prices and details, and order the product from where it's the cheapest. The one thing which is missing from this is the interactive communication with the seller. The possibility of asking questions or haggling.
To create this possibility the aim is to develop a universal webshop plugin which helps the communication between the buyer and the seller. The buyer can make an offer to the seller, who can accept or discard it. If the buyer get a special discount he / she would buy more products or advice this shop to the others. In my thesis I will demonstrate the development of this haggling plugin, using one of the most popular web technology, the ASP.NET.