I recently obtained a paperback version of this book. does anyone knwo its approx value or if it was rare. I had a huge search on teh net and read the man who was erdnase but no closer to the truth.
can anyone help??

You'll need to provide more details.
What does the cover look like?
Who is the actual named publisher, what does the inside front page actually say on it.
There's quite a few different editions, all with the King on the cover, but all of varying value.

You may have a Drake, KC Card Co., Powner, or some other edition, but without the extra details nobody can help you.

It might be worth from $30.00 to $100.00 if it's one of the above, and on up to the thousands if you've lucked into something rarer than any of the ones I mentioned.