"Barrels of oil per dollar in blue, Euro in red and ounce of gold in purple."

Here i dont know how to make it more clear.

Prices on anything havent changed. Your dollar has just lost its value.

If you flew to the middle east and Bought a barrel of Oil with 1 ounce of gold the same 1 ounce of gold can get you the same amount of oil.

How obvious does this need to be, may i add that paper currency isnt even allowed in the consitution.

The reason stuff costs more is cause they keep printing more dollars.