A Change Is As Good As A Rest

On my desk is a lovely wooden box, created by our super-talented guys in the cabinet shop. This box was made specifically to hold gas receipts. It is even labeled.

Today this was in that box:

I'm assuming it's labeled because I won't know what it is based on where it is located, where it shows the purchase took place, or that I cannot read the words GAS TOTAL on the receipt. I am grateful to whoever labeled this receipt in red letters for me.

That was very helpful!

But what I can't figure out is why the words are in quotation marks. It's not a real receipt, only a quoted one? This phrase was coined by someone important, like Winston Churchhill? It's the title of a forthcoming novel?

If you can shed any light on this, let me know.

And stop putting stuff in quotation marks unnecessarily!