If thats the actual advert, then I can see no problem in buying it. He has described it as working. If its not you can sue him if it doesn't work as it is not described correctly. You will need batteries and also a memory card. The reason its so cheap is because it has no memory card. The lens is included, it pops out of the cover when you switch it on. You might need to spend another $30 on a memory card.
Now the down side. I own a A85 camera which is similar in design and I can find no way to get any live view out of it at high enough resolution. This means you cant use onionskinning or other software features. You work blind, taking the frame then looking at what you have got. Some animators work this way to get good quality animations, but it is not the easiest way to work. Webcams give live view (QC9000) and make animation timing much simpler. I am not impressed with the colour of the images from my A85, so if this uses similar chips, dont expect fantastic quality. My logitech QC9000 produces much crisper images.
In conclusion, unless you actually want a camera for holiday snaps, use a webcam instead for animating, otherwise you will be constantly fiddling with your camera setup and not actually animating.
Free Animation Software at
www.HeliumFrog.com