If baseing the value of todays dollar against the value of the dollar in 1980, it is worth .40 cents. Take the average price of gasoline back then, which seems to be about 1.22. If I did the math correct (and please correct me if i'm wrong, I am at work and extremelly tired.), Gasoline should be 3.17 a gallon today if we were to base it off of those numbers. Just my

edit - and of course I understand that there are other factors, but this is just an estimate. Just something to think about.