Dang, bout time somebody posted in this area!
In my opinion, Hofners huge claim to fame was their violin shaped bass made famous by Paul Mcartney.
After doing a little research on your guitar, I honestly don't believe that it would be worth the price of a professional repair.
I've been a working musician for over 25 years, and I am constantly with extreme professional luthiers several days per week. 2 of my personal friends do custom-build guitars for many famous musicians.
(Which is fun, cause I get to play famous peoples guitars before they do!

)
It appears to me, (after looking around Ebay, and the internet) that your guitar is barely fetching around $200 for the most part.
I know first-hand that a typical headstock crack normally costs a minimum of around $150-$250 depending on how invisible you want the repair to be. And neck-setting work is normally a WAY more involved, and expensive process.
So, It's not really worth it to spend $300-$400 on a $200 guitar.
If your handy, you might wanna just try to fix it yourself.
If you can make it playable again it can't hurt.
I do LOTS of small repairs for people, like broken headstocks, electronics, binding, and fret-jobs, myself. (Mostly on lower value instruments. My good guitars still go to the Pros!)
Is the fretboard lifting up, or is the neck joint seperating from the body?
I would take my chances with a good wood epoxy and a few clamps. (be careful with the clamps!)
Hey, the worse that can happen is you'll have a playable guitar again!