hey friend, speaking of which, have you considered trying to buy PC pieces from overseas? China and Brazil are notoriously cheaper than EU, USA being the cheapest source of all - sometimes it's possible to import those depending on customs laws of your country, idk how it works in greece though
Some EU friends would sometimes ask me and other BR to bring them stuff because it's significantly cheaper than in the EU, though if there ain't restrictions like someone going somewhere, china and USA are always the best price tags for eletronics