You can sell anything quickly if you are willing to drop the price low enough. As stated below, simply price your property enough below market value and it will sell this morning. Whether you want, or have enough flexibility/equity in your home to do so - is a whole different question.
Investors are not in business to be "fair" - they are in business to make a profit. They are, or should be, laser-focused on the bottom line and if the deal does not make sense to them - they aren't going to waste their time on it.
Calling a "We pay cash for houses" sign on the side of the road is going to end in an offer for well below what you are looking for.
If it were as easy as calling a sign, then getting your home sold the next day for a "fair" price at or above market value - we'd all be out of business.... more