To re-affirm, Matt's statement is correct. Often, buyers ask if sellers will lower their price, or more specifically, they ask "how low will a seller go". This is a question that only the seller can answer. If their agent answers that question, he's breaching his responsibility to the seller.
Most people are reasonable. Sellers don't want (or expect) more for their property than it's worth. Conversely, buyers don't want to pay more than it's worth. Often, both the seller and the buyer make judgements based on the market, to assemble what is a "fair and reasonable" offer.
It sounds to me like you need a realtor to help you assess the market, and help guide you through what is considered reasonable. This is part of a realtor's job.
If you don't have a realtor, let me know, and i'll be happy to help you assemble this information. If you do, my advice to you would be to simply judge what is a fair and reasonable price for the property, and put together an offer.
When I have a buyer, and encounter a property that is overpriced or on the market for an extended amount of time, I often have a particular standard of operation when putting together an offer, in an effort to help the seller understand that their home is overpriced.. I'll assume your realtor has the same. If not, or if you don't have one, again don't hesitate to contact me.