What is the ruling on opening an online store that does not provide the buyer with the option of exchange or return, and is it permissible to stipulate that the buyer bears the costs of returning the merchandise if the option to return it becomes obligatory?

It is permissible to open an online store for internet marketing, provided that Sharia (definition) conditions are observed.

The condition of "no exchange or return" for goods does not negate the buyer's right to annul the contract due to a defect or deceit, because this condition is void due to its harm. The buyer has the right to return the defective goods or receive compensation for the defect.

However, the condition that the costs of returning the goods fall upon the buyer is a valid and binding condition, as it does not contradict the contract, and this is what jurists affirm even without such a stipulation.