Sunscreen prices depend on the advertising budget

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It appears that the sunscreen prices are directly proportional to the advertising budget of the company
Many of the companies which are advertising extensively charge very high prices for their product compared to unknown companies
For example a SPF 50 sunscreen from Nivea is costing Rs 495
A lesser known brand like Sunsecure is also offering SPF 50 sunscreen and the price is one third of the Nivea price.