The phrase "to sell for a profit" means selling something for more money than what you initially paid for it.
Sentences with «to sell for a profit»
The premise is simple - you find an old car, restore it and then sell it for a profit. (smartasset.com)
The fund seeks to buy cheaply and sell for the profit of its investors, and in this instance looks to have got its timing right. (artmarketmonitor.com)
If I am correct, dealers purchase assets for their own accounts, and later sell them for a profit from their inventory. (money.stackexchange.com)