I tend to buy GPs and EPs when they go on sale I don't remember the last one I got full price (I won JA in a giveaway so I got lucky to get that one on release day). For SPS I will buy one when I feel I want to add whatever content they have into my game. I'm far behind on purchasing them as I tend to buy them in release order and I haven't had the need to add Fitness Stuff into my game just yet. If they do go on sale for half off I'll probably cave and pick up Laundry Day out of order but other then that I have no real need for any of them in terms of my current gameplay.