Mtumba Overalls -Ex-UK or US

Wadau. I recently bought new locally made overalls for work. The Navy blue ones. Needless to say, the quality is whack. A few months of use and they are already torn. Am now looking to buy mtumba overalls. From some that I’ve seen, they are of far better quality the new ones sold in shops.
Nadai mashimo ya kuzipata. How much do they cost?