How long does iron tawa last?

Can you tell me how durable iron tawas typically are? I'm considering investing in one for my cooking needs, but I want to ensure that it's a long-lasting investment. Are there any factors that affect the lifespan of an iron tawa, and how can I properly care for it to ensure maximum longevity? Additionally, are there any specific brands or types of iron tawas that are known for their durability?