We live in an era of consumerism, where we are constantly surrounded by the next special offer. But the reality of discounts can be pretty misleading since the buyer does not actually have a reference point about the actual value of the given offer. To solve this issue, we developed a tool which aims to inform potential buyers and provides them with the bigger picture of the actual value of the purchase. Within this paper, we demonstrate the planning process and the development of a price tracker that in its pilot version tracks product prices from the online shop Mimovrste. The solution consists of the back-end part of the service, where we collect the latest data about product prices on a daily basis. To access the back-end service, we decided to introduce REST API, which is accessible to authenticated users via a website that we also implemented. The main website’s features are product price history visualization and the addition of price watches. The latter is meant to inform the customers about potential product price drops under desired prices. To implement the back-end part of the service, we used a combination of Node.js, Express.js as well as MongoDB; furthermore, the website was implemented with React.
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