If you were asking about one house in particular, I would be able to give you a direct answer. You are asking about several areas. In general, it depends on how motivated the sellers are. There is a free site you an link up to that will allow you to "watch" the prices on houses you are interested in.
www.audra.listingbook.com I would be more than happy to set up up with it. If you want, you can also contact me offline 516-769-6319. Again, there is no charge for this.
Im glad to help.
Prudential Douglas Elliman