There is also a possibility that the seller has been offered a number he did not disclose and he is patiently waiting to see if it comes to fruition. Everyone is different and if someone wants it more than you with disposable income to burn then that's tough to beat.
Sellers like everyone come in all shapes and sizes. Stay on top of it until it's no longer available. Squeaky wheel gets the grease and you may be closer than you think. If by chance you get the knock on your door drop everything and close the deal if you want it....
