Not sure I get the reference. Apparently it's easy to end up in a position like the author, with a large (La)TeX manuscript that easily produce good pdf/PS, but mediocre to awful html/epub.

One option for getting help would be to open up everything to everyone - selling access to the source might be a way to retain some income while enlisting some help in conversion from volunteers (yes, we would first pay full price for the content, then volunteer to try conversion options to produce passable epub output).