2 reasons:
Because the company prices the products this way. The printed price for 50mg is 15 LE, for 100mg it is 19.25 LE. For every product of multiple potencies, the price never scales with the potency. There is always a small difference of price, because most of the costs are not the actual drug, rather R&D, distribution, marketing, etc
Majority of our costs are import and procurement costs. They apply equally to each pack, regardless of the source-cost and potency.