With 400 euros you do not need a dev but a modder: he/she buys templates and cloud space from well known marketplaces for peanuts or for free then inserts your

With 400 euros you do not need a dev but a modder: he/she buys templates and cloud space from well known marketplaces for peanuts or for free then inserts your content, sets up your project online and writes you one page to manage it properly. He/she will spend a couple hours and you are served with a working minimum viable product for showcase.