Use the adjective rock-bottom to describe something that can't be any lower, especially a price. If a store is selling TVs at rock-bottom prices, you probably can't find one any cheaper. You'll almost always find this word describing the low price tag of something that's on sale or that has a very low cost.

What is rock rate pricing?

rock bottom noun [U] (LOW)

the lowest possible level: Confidence in the government is at rock bottom. Prices have reached rock bottom. They were selling the goods at rock-bottom prices.

What does reaching rock bottom mean?

When someone who is struggling with drug abuse “hits rock bottom,” it implies that they have hit their lowest possible point – perhaps they were arrested, hurt someone while high, or had an overdose scare. Essentially, “hitting rock bottom” means hitting a point where things cannot get any worse.