Seamless Two-Photo Merge

I have two separate images that need to be merged into a single, convincing photograph. The background from Photo 1 should remain intact, while the subject from the second shot is integrated so cleanly that no one can tell the image was edited... (Budget: $2 - $8 USD, Jobs: Color Grading, Graphic Design, Image Analysis, Image Processing, Photo Editing, Photo Retouching, Photoshop, Photoshop Design)