Background Removed, Transparent Product PNGs

I have a set of product photos saved as JPEGs. The product itself must stay perfectly sharp and fully opaque, but every bit of background around it has to disappear so the file can be used on any coloured layout... (Budget: $10 - $30 USD, Jobs: Background Removal, Graphic Design, Image Processing, Photo Editing, Photoshop, Photoshop Design, Product Photography, Visual Design)