Hi Amitava, I'm not sure what you mean by your reply. Let me expand on my original question by giving some examples :
Example 1: Suppose a potential buyer asks through "Ask seller a question" for some detail about the item that is not mentioned in the item page. Based on the seller's reply, the buyer decides to buy it. But when the item arrives, it is not as the seller described it in his reply.
Example 2: Suppose, before committing to buy, a potential buyer asks if the seller can send the item by a particular mode of shipping and the seller assures him that he can. The buyer then commits to buy. However, the seller then says that he cannot ship it by that method, OR he sends it by another shipping nethod which causes a lot of problems for the buyer.
Please note that I do NOT have any such problems now. These are just hypothetical situations, but they COULD happen. If such situations actually arise, what is eBay's policy ?