I think it's understandable when people complain about poor quality goods, even if they were cheap. People still expect a certain level of quality, regardless of the price. Sometimes, they might feel tricked by the way a product is advertised or packaged. Complaining can actually help companies improve their products, and it shows that consumers are aware of their rights.

I think it's a bit unreasonable to complain about low-quality goods if you bought them at a low price. Usually, low prices mean lower quality, so people should expect that. When you choose cheaper options, you're taking a risk with quality. Complaining might not change anything if the product was really cheap to begin with.

It really depends on the situation. If a product was advertised as high quality but turns out to be poor, then complaints are justified. Even for essential items, low-cost goods should meet basic standards. Consumers should do some research before buying, no matter the price. Complaints can also serve as feedback for companies to improve their products.