So, I sold my PS3 copy of Skyrim a long time ago, and retreated to PC-land. You know why
When the DLC launched on EU PSN, it was half-price for a while. Nice gesture. Further down the line (a few months back?) it was advertised in the 'Price-Drop' section of PSN which to my knowledge is always used for permanent price drops (as opposed to the 'sale' section). I remember seeing this and making a mental note to re-acquire a PS3 copy and purchase it later.
Having just picked up a PS3 copy of Skyrim from eBay, I went to the PSN store to purchase the DLC and lo-and-behold, it's full-price again.
Is this a mistake, or just some deceptive advertising? Buying the DLC from the store now works out considerably more expensive than a new copy of the 'Legendary Edition'. Not amused :/