The full-price for these two episodes are $30.00 (15USD per episode). This sounds good on paper, but here is something to consider.
Each of these episodes are about the length of one chapter in the Bioshock Infinite main game. This isn't an attack on Bioshock Infinite, since the main campaign is downright amazing. These two episodes are so short, and barely has any real outstanding moments or anything that even comes close to the main campaign, that I think it is criminal selling these two episode for such a high price.
There is nothing really interesting about these two episodes. The gameplay is exactly the same as the main game, the area in Rapture just does not mesh well with Bioshock Infinite's gameplay, which feel very force when you are using the rails in Rapture. It doesn't feel natural, it feels like "ok, these rails were put here by the game makers," as opposed to "wow, these feel like they belong and is part of the environment."
I don't really care about the length of games, but there is nothing to make up for the price in terms of gameplay. Like I said before, pick any two random middle chapters in the main game, and play them. These two chapter feels like that, it feels like playing two chapters. No boss fights, environments are uninteresting, and the only enemy you fight are the same looking splicers, two weapons (hand gun and machine gun), and 3 plasmids. There is upgrades at all. The game is way too short and barely has anything worth redeeming besides the first 15 minutes of running around Rapture and seeing how the city is like before the fall.
BUY THIS AS PART OF THE COLLECTION, DO NOT BUY IT SEPARATELY! It is nowhere near even worth the asking price of $30.00 for something this BARE MINIMUM!