No, it's not a photocopy. It's an Indian reprint of books published elsewhere in the world. In this case, O'Reilly might have some sort of a tie-up with Shroff publishers (the publishers here) to reprint their titles for sale in the Indian subcontinent. This is possibly to help make such books affordable for Indian readers.
I'm glad to hear it's on the "Up and up" (ie, legitimate).
I do believe, however, that the advice given elsewhere in this thread to go directly to "Mastering Perl/Tk" is probably the best approach. I haven't read either, but the "Mastering" book is at least a few years newer, better reviewed, and still in print.