T-Rex: In my experience, people, perhaps my mom, often say "we can't afford that: money doesn't grow on trees! And we can't afford THAT either: money still doesn't grow on trees!"
T-Rex: So quick question:

T-Rex: Why aren't APPLES free?

T-Rex: They grow on trees! THAT IS LITERALLY WHERE THEY COME FROM. So what's the deal? Shouldn't things that grow on trees be the least expensive it's possible for a thing to be?? Or have we - and I hesitate to even suggest this - been sharing aphorisms with each other that are not internally consistent?
Dromiceiomimus: Apples are free, T-Rex, but only if you have an apple tree. And sadly, apple TREES don't grow on trees.

T-Rex: But apple trees grow from seeds in the apples! And THOSE grow on trees.
Utahraptor: True!

Utahraptor: But the price of the apple includes not just the cost of the fruit, but the costs involved in moving it to you for purchase. And LABOUR doesn't grow on trees. Things that grow on trees are only free if you're stealing from the trees.
T-Rex: Stealing from trees, you say...

Narrator: AND SO:
T-Rex: I am the T-Rex! I steal from the trees!
T-Rex: ...And in doing so I have saved upwards of FIFTY CENTS