Infix Pro works like a normal word processor, so it’s really easy to use. It’s easy and quick - change text, fonts, images and more. No interface gimmicks, no ribbons! Change a single word, a paragraph, or an entire page. Infix Pro covers your back, reflowing and reformatting text to keep it looking good. Once you’ve saved a file, you can’t even tell it’s been edited. It has advanced Find and Replace, Translation, Bates numbering, OCR, Headers & Footers... Infix offers powerful tools designed to solve real-world PDF problems.
Full pricing information can be found here.
Note: Although Finder indicates that this is version 7.x.y, the developer states that this is version 7.4.3