ricecake gave a good answer already. In the EU you have 2 years. In the first 12 months the company has to prove that it wasn't their fault, in the next 12 months you have to prove it was their fault.

If no such law is in place, nothing protects you from them using cheap materials that break after a few months.

E.g. I once had a free xbox-replica controller every year because their product was shit and it broke after ~6-9 months. They had to replace it and did so three times. Then I got my money back. Selling * doesn't work here.