To be clear, premium economy and economy+ are different things. The former uses larger seats and is typically available on long-hauls. The seat is somewhat sim

To be clear, premium economy and economy+ are different things. The former uses larger seats and is typically available on long-hauls. The seat is somewhat similar to old-style business class seats, or modern domestic first class seats. It is not priced at 10% extra, it is usually close to double. The latter is priced at around 10% extra, but is the same old economy seat just with a couple of inches more legroom. It would be nice to have to pay only 10% extra to get 10% more space, but the lack of scaling is by design on the airlines part, and textbook market segmentation. Edit: this article has pictures showing the difference: https://www.cntraveler.com/story/whats-the-difference-between-premium-economy-and-economy-plus https://www.cntraveler.com/story/whats-the-difference-betwee...