I have sent out several original broadcast sheets to folks over the years. Some send a donation, usually between $5.00 & $50.00
Others send in items they have found to keep the wheel rolling.
Some do not even bother to say thank you & some do say thanks but do not reimburse me for postage.
So, the monetary value is negligible, but it sure does feel good.
Any known history about a car will help with the sale. Having an original broadcast sheet, literally a whole page on the car's history is a good thing.
Determining any monetary value is up to the seller & buyer.