I'm a new subscriber of Playstation Plus and I've downloaded a few games in the "Instant Game Collection" that are offered free right now to subscribers. I know that I can play these games as long as I maintain a valid Playstation Plus subscription.
However, what if I want to really purchase one of these games digitally (not on disc) so that I can play it even after my Playstation Plus subscription expires? I do not want to wait till my subscription expires to purchase one of these "free" games because there may be some good deals in between to buy these at a cheaper price (instead of looking for a good price after the subscription expires).