The last line says it all. I guess it depends how much the $120.00 means to you. I from the school of thought that if I spend a lot of money at a store I expect to be taken care of. I can understand the guy making a buck but at $720.00 I think he's pushing the limits of loosing customers.

I know if it were me I would be down the road in a second.

Did you see if that was the "best" price they can offer. I wouldn't throw the other guy's price in their face but I'd make sure they know you're a good customer and there price is high.