So in the "How stupid do they think we are?" thread Moses Yoder posted the question:

So far as the original question, if there is a gas station selling gas for $3.499 and one right beside it selling gas for $3.50 any bets on which one will sell more gas? I have $50 on $3.499, any takers?
Let's do a poll to see how many of you would go for the one tenth of a cent discount per gallon and how many of you, on the principal, would go for the rounded-up-to-the-nearest-penny price.