This book is well worth the price.
After getting this PDF I ordered the Dead tree edition.
Its the powers system from Godsend RPG. I am a huge fan of supers RPGs. I own more than one edition of champions, My first GURPS supplement was supers and I own about every mutants and masterminds book in print.
This is by far my favorite Supers rules to date.
[5 of 5 Stars!]