Words begin or end with X, Y, or Z to describe price/quality of services/products

I'm looking for a set of words which begin or end with letter "x", "y", or "z" to describe differentiated price levels or quality of services/products.

Purpose of this question:

To label services/products into 3 categories by their price or quality.

For example:

• Word with "x" should mean "cheap, least expensive, but less quality"


• Word with "y" should mean "best value, balanced with price and quality"


• Word with "z" should mean "premium, most expensive, but highest quality"

Rules:

• The words don't need to be correct grammatically.


• The words read (sound) exactly the same as original word.


• The words can be slangs / new words.


• The words don't need to be found from "Oxford dictionary".

Words I came up with:

luX (from luxury)

cheapy pricy

I couldn't come up with any words with "z". And I'd like your suggestions for "x" and "y" as well.