While I have seen 2 TB hard drives on amazon for like around 100. With ps3 I have the 120 GB and I still to this day have like 36 GB left but I don't have a lot of downloaded games. Now with ps4 because ever game hast to be installed to the hard drive something I really hate I know the 500 GB is not going to last at all. Right now I only have madden 15, mlb 14 the show, NBA 2K14, infamous second son, knack and lego marvel and I don't have any dlc or videos or anything and I am already down to 206 GB left after just 6 games. I am probly going to get drive club this year and I cant weight for batman arkham knight. After that I will probly already be down to like 100 GB already. I don't ever delect my games other then when I go form like nba 2k13 to 14 kind of thing has I still like to go back and play games once in a while that I haven't played in a long time. With the 500 GB I will probly be out of spaces after only like 10 games. That means with a 2TB I could probly get around 40 games on the hard drive not counting DLC. For what it is worth on ps3 I have right around 40 games. So really to be safe and not have to update more then once I probly need a 3TB hard drive and has far has I no there is no 3TB hard drive that works on ps4 yet.