[Vigilanteman]

Lee's army would spend about a month in Pennsylvania the following year, ending with the Battle of Gettysburg.

It was an interesting month. A couple of instances are recorded where rebs forced local merchants to trade their well-worn hats and other clothing items for newer models.

Their commanding officers forced them to return and either trade back or pay them the fair market value for the difference.

Quite the contrast to how Sherman's army treated the civilians in Georgia the following year.

[BroJoeK]

Vigilanteman: "Their commanding officers forced them to return and either trade back or pay them the fair market value for the difference."

But "Fair market value" paid in Confederate currency was becoming increasingly a bad joke:

"As the war progressed, the currency underwent the depreciation and soaring prices characteristic of inflation.
For example, when news of the Confederate defeat at Gettysburg reached the public, the Confederate currency depreciated 20%.[3]
Confederate President Jefferson Davis asked private citizens to restore the value of the Confederate dollar by mutually agreeing to sell and buy items only at reduced prices.[4]
In October 1863, Confederate States Senator Louis Wigfall of Texas said that a Confederate soldier received $11 per month in pay, which was worth the same as $1 had been worth at the beginning of the war.[4]
In September 1864, one Confederate dollar was worth the same as three cents of United States currency.[5] "

Further, by the time of their third raid on Chambersburg in 1864, there was no discussion of "fair market value", but only demands for cash with threats to burn down Chambersburg if not delivered.
When the citizens refused, Confederates burned down Chambersburg.