These types of cards used to be seen at card shows in the 50 cent to $1 bins. Occassionally, you may find higher price tags, depending on the player and the time. Those days were when these cards were popping up like mushrooms - the late 80s/early 90s. Now, they rank in the annals of the "junk wax" cards, where there were so many printed, in an uncontrolled manner, that if there were still regular cards shows, these might show up in dime to quarter bins. Many people won't buy them (myself included, the only ones I have came in either blind lot purchases or in blind lot trades). You could always check ebay to see if any have sold recently.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).