High-Res Object Removal from photos

I have between one and five large-format photographs that need precise object removal while preserving every pixel of their current resolution—I’ll be enlarging these images later, so no down-sampling, compression artefacts, or softening can be introduced... (Budget: $10 - $30 USD, Jobs: Background Removal, Digital Art, Graphic Design, Image Processing, Image Upscaling, Photo Editing, Photo Restoration, Photoshop, Photoshop Design, Visual Design)