This got promptly deleted when I proposed it on /r/worldbuilding, but let’s see how it fairs here. I’ll start with one. Feel free to add others. Fill in the blanks in a way that makes sense in your setting.
[plural noun]? [plural noun]? [plural noun]? It’s yours, my friend, as long as you have enough [name of currency]!
What prompts the market for replacement pineal glands?
Also it helps with the production of serotonin.
I know what it does, but “replacement” implies the original is no longer there.
Replacement as in the original doesn’t work well enough.