Transparent Background Photo Cleanup

I have fewer than ten images that need their backgrounds completely removed so the subjects sit on a crystal-clear, transparent layer. The end goal is high-resolution PNGs that keep the original dimensions and color profile intact... (Budget: $2 - $8 USD, Jobs: Adobe Photoshop, Audio Services, Background Removal, Digital Art, Graphic Design, Image Processing, Microsoft Office, Photo Editing, Photoshop Design, Virtual Assistant)