What the F?

Yesterday after going to the gym my girlfriend and I were driving home when I rememberd that I had saw that Friends DVD's were on sale for a measly $17.99 at circuit City. You read that correctly, $17.99 for one full season of your bestest friends in the whole world. So I said to my girlfriend, "why don't we drive over to Jersey and pick up a couple of seasons". She initally felt bad about me spending the money on it but she got over that on the ride over the bridge. Besides, the way I figured it I would have to buy this eventually so why not get them cheap? So we get there, grab 4 seasons( 2 for my GF and 2 for my sister), bring them up to the counter, take out my credit card and he rings them up. Grand total? Roughly $134. Now I may have barely passed every math class I have ever had (probably shouldnt have passed either) but I know 4x17.99 is not $134. And I was right. Turns out we just missed the sale. We walk away rejected and drive back over the bridge in defeat. So basically, now I have too pay full price for them at christmas. This is why Friends are not my friends.