2nd printing of TPO had a cover price of $20, and the systems it includes conversion notes for may be a bit different: Palladium is removed, but it also includes Kult and World of Darkness, which I don't recall being among the 1st printing systems (I could be wrong though, since now that my 2nd printing book is at my desk, the 1st printing books are upstairs, and Heather's asleep already again
).