If it's still $10-15 then it's worth buying. I had a few laughs here and there, some routes are cute, some are funny,and some can get creepy.
With the added content there's at least one guy for everyone. Routes are pretty short but it's fun for the first few rounds. It's a fun experience for the first time. I wouldn't really want to go through routes again. You don't really feel like you're dating the characters, more of just seducing them and finding out what ending you get if successful. If that's your thing go for it. Also did I mention the game is funny? Try messing around first before you take the game seriously.