I break and drop and lose sunglasses constantly, I have to buy 3 or 4 new pairs a year so I’m not interested in buying anything expensive. Until recently I bought some Chinese 5 euro crap but I would prefer to buy 10-15 euro EU made crap. Is there anything like that available?
What part of the glasses are you breaking? I broke the hinge once and since then I watch out to buy only glasses with a thicker hinge than the tiny ones that are really common.
What I break the most often is a connection between them and me. Meaning that I forget them somewhere or simply drop them without noticing.