"Treason" by Orson Scott Card

"Treason" by Orson Scott Card
    https://www.amazon.com/Treason-Orson-Scott-Card/dp/0765309041/

Standalone science fiction fantasy book, no prequel or sequel that I 
know of.  This is a rewrite of "A Planet Called Treason" by OSC in 1979. 
  I read the ok printed font and well bound trade paperback published in 
1988 by Orb Books.

Here is the first paragraph of the marketing blurb, "Lanik Mueller's 
birthright as heir to planet Treason's most powerful rulership will 
never be realized.  He is a "rad"--radical regenerative.  A freak among 
people who can regenerate injured flesh... and trade extra body parts to 
the Offworld oppressors for iron.  For, on a planet without hard 
metals--or the means of escape--iron is power in the race to build a 
spacecraft."

The author has a website at:
    http://www.hatrack.com/

My rating:  4 out of 5 stars
Amazon rating:  4.5 out of 5 stars (137 reviews)

Lynn