A. Where did you get the price of $15? The bundle costs $35 and a safer estimate for an individual cost would be $20. B. Where did you get the 12 hours of entertainment? The expansion campaign is estimated to be at two to three hours in length. The new raid activity is said to be shorter than the current Leviathan raid, which can be cleared in 1 to 2 hours (after the learning curve). I don't think it's been announced how many new strikes there will be, but I think it's safe to assume 2 or 3, at about 20-30 minutes a piece. Of course you can grind all of these to your heart's desire, but I doubt you could say there's 12 hours of new content coming with the expansion.

lets assume you do the campaign in 2h and the raid in 1h first time you do it, then you still have to level your character to max light, play all the side missions, try-out the new maps in the crucible, play the new strikes, play the new public events, explore the new zones; find the new lost sector that won't be showing up on the map anymore, and you think you'll be able to do all that in 4h? At the very least there are 8h of content, for $20, two McDonald meals, 2 movies worth 4h of entertainment max, or a shitty game on Playstation store. Well i guess you might as well get the $20 shitty game, you will definitely have more fun playing that.

Out of that long list, the side missions is I think the only thing I omitted from my first post. So yeah, that could add a couple more hours if they anything like the current side quests for unlocking the exotics. The current exotic quests are pretty low quality content in my opinion, but content nonetheless. I think 8 hours is probably a more reasonable prediction of how much fresh entertainment you'll get from this. Also, it sounds like you are saying all $20 games are shitty... Do you judge games based on how much they cost?

Eh. Maybe 20 mins of entertainment if you take your time.