That's called opaque pricing, and that's different since you are getting a discount in exchange for not knowing which specific hotel you are getting to stay at so it's not exactly comparable to going to your preferred hotel's website and choosing the room you want. However, as I have edited into my prior comments, I am finding that the best price guarantees may not apply on the day of arrival, and third party websites are evidently cheaper than hotel websites. Seems like a shortsighted move since now I don't trust the hotel website to have the cheapest price, so I'll go via third party websites and hotels have to pay commission.