I also think that it is important to look not only at the price of services, but also at the experience of the team. Especially if the project is related to medicine, where mistakes can be expensive. Sometimes it is better to spend a little more time finding a reliable contractor than to redo everything from scratch later. I think it is worth paying attention to the portfolio, real cases and customer reviews. And it would also be good to immediately discuss support and maintenance of the project after launch.