Talk:Mac OS X 10.5.0/@comment-85.210.148.86-20120806145407/@comment-24886041-20150115003710

Search eBay or craigslist -- there are still copies for sale.

That said, 10.5 is really not a useful version of the OS. Stick with 10.4.11 for PowerPC Macs, and upgrade at least to 10.6.8 for Intel macs. 10.5 doesn't really offer much that's useful over those.