Backseat,
You can self-publish the book. You won't make much, if anything. But you could always get it out there for people to have greater access to. Maybe offer it for a couple of bucks electronically? And give people a choice of a printed version (print on demand).
You could pay a professional to copy edit the book -- it would cost quite a bit but may be worth it (to find the small errors, like you said). Or have a couple of friends go through it with a fine tooth comb. It won't be error free, but that's ok. :)
I'd love a copy with a nice cover to keep in my library. This book is worth it.