You don't need a really expensive camera to take good quality pictures. You can usually get a decent camera fairly cheap these days. Even some cell phones have decent cameras now.
Some things that can help your picture quality:
1. Make sure you have adequate lightning. Automatic cameras need light to focus properly. Don't rely on your flash.
2. Keep the camera steady. Either invest in a tripod or prop up your camera so there is no motion from being hand held.
3. Use picture editing software to clean up the image.