Hi Jeff. I work regularly in the 23454 area - basically, Greater Great Neck - and the answer to your question honestly is across the board. It really, for all intents and purposes, is a property-by-property situation, with very little about which to form such a generalization. It also, as you may expect, depends in large measure on
 how well - i.e., correctly - the property is priced, and
 the level of selling interest/motivation of the property owner.
The higher you get in the price point range, and the $700s of course is getting up there - the greater variance you also will find in answering this question.
The most imporant objective in any such purchase is to make sure you pay the right price. Period. Representing buyers, I never worry about what an asking price is. People can ask what they want. The important thing is to pay no more than the house is worth and, in so doing, if you can get something of 'a deal' [again, depending on the motivation level/objectives of the seller], then naturally even better. I personally carefully and painstakingly study the comparable sold properties, develop what I think is the right number, go in and convince the other side why we are right and why this is where they need to sell the house.
Let me know what I can do. I am a strong negotiator [with over 20 years as an attorney with broad corporate law experience before becoming a Realtor], and a local native who works the area extensively. I'd be grateful for the opportunity to work with you.