On the "Best Snake Book" thread, one book that's not currently available in English stood out as being exceptional: Strumpfbandnattern by Hallman M. & Chlebowy J. In order to put in the effort to do the translation, it would have to be worthwhile for the authors. The German version currently sells for about $35, so how many people would buy a copy written in English, if it costs between $40 and $50 (USD)?
Rick