Olympus Camedia AZ-1

I bought the Olympus Camedia AZ-1 Camera [my first] on ebay refurbished for £75, been amazed by the things it can do, pleased by its convenience for down loading pictures and recharging. I bought a 64Mb card for £10 giving 80 full spec pictures. I am not an expert, maybe they all do these things. The picture quality looks really good. It has 3 x optical zoom and 8 x digital zoom to good effect. I only wrote review because I thought no one else had. Bit concerned that it is already replaced by AZ-2. I would have liked to know how long battery lasts, seems ok to me except where there is extensive flash use. I thought about buying a spare battery but not been needed yet. Not sure about value for money as I did not pay full price.