Hmm.... I don't have any to recommend first-hand.
There is an archive on Aminet .... agocr.lha -- it appears to be a port of a unix-ish OCR package. A bit out of date, perhaps.... But free! :-) Can't hurt to try it.
The base version is now called jOCR, but there isn't an Amiga executable of that. (If you have a GCC environment, it might not be hard to compile one from the source, but I couldn't tell you for sure, because I didn't look any further into it.)
Off-topic: Say.... Are you the "Primetime" that used to call the Detroit area C64/Amiga BBSs?