The last one I saw for sale on Ebay sold for $1500 with a BIN. It was about the same condition as you describe. I'm not saying that is standard pricing necessarily but these seem to get harder to find every year.

I saw a pic of one recently.

Here is a pic of Dirt's 1 cent Skill Roll. I never knew they made one until seeing this one recently. Pretty interesting. It has been sold I believe but the Skill Derby may be available.

Of the Skill series, Skill Roll is the most fun obviously but I always though Skill Derby to be the most interesting. That topside animation is just plain cool.

IMG_6266 (resized).jpg

Not sure. I'd never seen a penny game until recently. Obviously the badge, coin mech and coin entry would be different. Not sure if the play board would have any difference. It makes you wonder how the gameplay would be with the weight difference. It's one of those situations where I think I'd rather own the nickel version for play but the penny version has value too as it's kind of an oddity.

For the record I paid $200 for my Skill Roll about 12 years ago. I wouldn't sell it for $1500. Too hard to find if you decide you made a mistake.

Here's a more modern version but it seems even less common than the EM.

http://www.ipdb.org/showpic.pl?id=5722&picno=51156