Note that price is the point of agreement between a willing seller and a willing buyer. Until then, it is ask and offer. Value is what market histroy says is the likely price. The downside is that the seller may never sell it and the buyer may never own it. However, in a free market both buyer and seller are free to maintain a non-agreement position for as long as they care to do so. Certainly you can/should bring to bear every argument and persuasion you can muster. However, there is no "big stick" to move the seller if he is disinclined to do so. Sorry.
DDA
