High-Volume Background Removal

I have a batch of well over fifty images that all need the same treatment: clean, precise background removal and replacement with a pure white backdrop. Every subject must stay intact, with no halos or jagged edges, and the final images should match the original resolution and file format I supply... (Budget: ₹12500 - ₹37500 INR, Jobs: Background Removal, Graphic Design, Image Consultation, Image Processing, Photo Retouching, Photoshop, Photoshop Design)