The number of pixels, color depth and readout time determine the basic picture quality provided by the camera. Software tricks may be able to improve on the raw data.
Pictures are reasonable cheap.
However, you don't know if a picture turned out right until you have it developed. Once the image is developed, it can easily be stored and is very durable. You will however need a scanner of have the images transferred to a CD in order to use them on a web page. Image quality is high for 35mm film and a wide variation of films is available for any situation. A Polaroid camera will allow you to check the image right after you expose it.