Convert Logos to High-Resolution

I have three logo images that are currently in PNG format. When I scale them up for printing on merchandise they appear pixelated, so I need each one recreated at true print-quality resolution. You will receive the existing PNGs along with the original editable design files I still have... (Budget: $10 - $30 USD, Jobs: Adobe Illustrator, Adobe Photoshop, Graphic Design, Illustrator, Logo Design, Photoshop, Print Design, Vector Design)