Update: looks like Sony has been very quick at fixing this one. The glitch is gone after having been up just a little bit over an hour. Congratulations to those that were fast enough to get it.
The original article can be found below:
Looks like someone at Sony Entertainment Network pressed the wrong combination of buttons, as you can currently get the full version of the newly released God of War Collection for free if you have PlayStation Plus and you live in North America.
All you have to do is to go to the storefront, grab the free full game trials of God of War HD and God of War II HD for PS3. Then go to the God of War Collection (This doesn’t seem to work for everyone. If it doesn’t for you and you receive a message saying that you already own the game, search it and buy it directly on the PSN storefront on your Vita), and select the PS Vita version. For some strange glitch of the cross-buy feature it’ll be free, and you’ll be able to “purchase” it.
Once purchased, it’ll be all yours to download and play, and as the proverbial cherry on top, the cross-buy feature will go full circle and you’ll also own the digital PS3 version.
This could definitely help those that, like me, own the retail disc version of the collection for PS3, and saw themselves excluded from the cross-buy deal, because apparently discs aren’t en-vogue anymore.
Of course, since this is a most probably a glitch and not Sony Computer Entertainment feeling unbelievably generous, you may want to do the whole process as soon as possible. It’s not going to last long. Assuming that exploiting this kind of mistake agrees with your moral compass, of course.