35 dollars was the original answer, but I believe that you need to take into consideration other factors such as the age of the cards and collectibility or rarity.
500
How much is a 1988 madero 500 worth
how much was 500 pounds worth in us currancy
I would imagine that it was worth 500 marks!
it is worth 500$
500
about 500$
Less than the box you would send them in.
500
$500
If you have both then 500
about $60