You would be surprised at the number of chats e-commerce websites receive in a day.

One of our clients (selling clothes targeting 40+ women) had their sales almost double when we added in a simple livechat widget.

Since I discovered that they actually put helpful people behind those chats I've started to use them. Now I ask questions with all my online transactions. "How is the warranty? Do clients return this product a lot? Do you have any similar products to recommend me?", etc.