How much profit are we entitled to make

Q: How much profit are we entitled to make when selling a product?
Answer
The Shari’ah has not stipulated a fixed amount of profit one is allowed to gain when selling an item. However it would be highly indecent of one to ask a hefty and exorbitant price. There should be no trickery and deception involved in setting a price.

(Fataawaa Mahmoodiyah, Vol. 13, Page 349, Fataawaa Rashidiyyah, Page 543)

And Allah Ta’ala knows best