Reddit mentions of Wilson "The Duke" Official NFL Game Football - Old Version

I understand that it's for charity, but there needs to be a reasonable price established. This way, you don't under or over charge.

Brandon does public autograph signings. Typically, he charges about $80 for any object.

Depending the actual ball (generic, rubber, NFL Duke, etc) and quality of the marker used, the price will fluctuate.

So, my guesstimates:

• Top dollar: Signed w. a paint marker on an NFL Duke football with proper documentation, start @ $250
  
• Mid dollar: Signed w. a black sharpie on an NFL autograph football with proper documentation, start @ $150
  
• Bottom dollar: Signed w. a poor marker on any other football (especially the white ones with the embroidered "C"; signatures turn purple after a while) no documentation, start @ $50

You're correct however it's delayed to not ship before 1-2 months.

NFL Shop still has em at $99 but they rarely put anything at a noteworthy discount