enigmatic puzzle - The mysterious equations - Clue Twenty Seven

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_{A note from @Mithrandir: I have given explicit permission for @Volatility to post this, and gave him the answer to encode. If you want to post one, ping @Mithrandir in chat and we'll talk.}

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You speak the answer. And of course, a trapdoor opens up and you fall.

You land on something soft, but everything is dark. Then a light flickers on, and you see that you're in a small space. On the far wall is a plaque:

Here's an enigmatic-puzzle for you, again. Are you good enough to solve it? You cannot pass until you do, as you very well know...

it != pile_of(rhythms)
jpg == (10**3)*moor
judgement.oz == acuity.noise
[thumb, palm, wren, fingers] == [trees, philosophy, trees]

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Hint 1:

Take a look at the paper the puzzle's painted on.

Hint 2:

What's it worth to solve this puzzle?

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Edit: Having received feedback from various people that the puzzle was severely underclued, I have decided to modify it to make it (hopefully) more accessible. Apologies to anyone who spent a lot of time on the previous version(s), whose difficulty I grossly underestimated.

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Answer

Each one has a letter changed from the phrase with worth found by Gareth

First is

A hill of beans -> beaTs

Second is

A thousand words -> Lords EDIT: Actually woLds.

Third is

pound -> Sound of wit

Last is

two -> tAo (actually spelled tau though?) in the bush

Finally

Use the changed letters to spell SALT, EDIT: by taking them in the order of the changed letter in the word. Sound, tAo, woLds, beaTs