It's a really bad experience to be playing a game and encounter a quest that asks you to pay for and download an expansion. This actually happened with Dragon A

It's a really bad experience to be playing a game and encounter a quest that asks you to pay for and download an expansion. This actually happened with Dragon Age 2, one of the fairly early quests shows up just like any other quest, but requires a paid download to complete. Very frustrating. Another example is Rocksmith. Paid DLC songs show up in the song browser in-game in the same list as songs that you already own, but when you pick them to play it takes you to a screen where you have to put in your credit card and download them. It makes it seem like the game has more songs than it actually came with out of the box. A really egregious example is Bioshock 2, where the paid DLC is actually on the disc already. So it was created and added to the gold master, but they still charge you extra money in order to access the content that's on the disc you already paid for.