The company which is taking care of your business you are going to have a really hard time if you decided to sell your property as quickly as possible. First of all it is a very difficult task to find a decent client quickly.
Majority of people are only coming to watch and more than likely asses the price of their own property. If by some chance you manage to find the buyer than you have to know how to write the contract in a safe professional and clear way as signing the wrong agreement can put you in trouble.