The 2001 Stadium Club "Dirt Cards" have always been one of those really unique ideas that a card company tried out and then quickly never ever tried it again. Many collectors do not the communal cards, such as game used base cards, the Stadium Club pitchers mound and batter's box cards have remained pretty popular over the past decade plus since Topps first introduced them to collectors. I am sure that if card companies had continued to make these they would all be $2.00 shipped on Ebay, like game used base cards are, but having only one run of cards like this has actually helped their value and popularity.
There are a few cards in this set which can be found for less than $5, but the cards generally float somewhere closer to the $10 mark, and at times, can even approach $20. I had picked up a copy of the Big Mac card way back around the time the 2001 Stadium Club set was first released, but ran across another copy last week while making a few trades to work on my thread about the Durham Bulls. I needed to take on another card to even out the trade and had a hard time saying no to this old friend.