So, what do you prefer, to sell your coins instantly for less or to open an order and profit a slight better margin, reaching the general market's prices rates?
Everyone has their own reasons why they sell instantly or through an order book. In this case, I think everyone might also do both, it will depend on the conditions when we sell it. If we feel in a hurry to sell it and the listed price is sufficient, then there is no problem selling instant. But when the price is still not right and we are not in a hurry to sell it, it will be better when we set the price at a certain rate.
And one more thing that makes a difference, sometimes the transaction fees between the instant market and the order market are different, sometimes the instant market has higher fees. However this will depend on the exchanges.