Photo & PNG Upscaling for Print

I have a small batch of images—fewer than ten—that need to be enlarged without losing clarity. The set includes both standard photos and PNGs with transparency, and all of them will go straight into print material, so crisp detail and true-to-source colours are essential... (Budget: ₹12500 - ₹37500 INR, Jobs: Graphic Design, Illustrator, Image Processing, Photoshop, Photoshop Design)