I'm aware of the best value guarantee, however, I've always interpreted it as an item that is advertised in print. I always assumed that the items that are advertised by web page are not advertised in print. But I always thought that if you printed the page, it is a print of an item advertised by web so doesn't count. But then I guess I took the definition of print to mean printed on a piece of paper. Or perhaps I misinterpreted the syntactical meaning of the clause, perhaps it means if you find an identical item advertised, and if you have it in print to prove it. Or maybe print could more generally include items printed on a computer monitor display? Or perhaps it could be interpreted as an item that is advertised anywhere on any form, but if I found it somehow then it is eligible. Could it be that it doesn't matter where the item is advertised or in what medium, but if it somehow ends up on a computer printer then it is said to be printed -- say, if I took a picture of the item's price tag in a store on my digital camera and printed that? Argh........ So basically even though I knew about the guarantee, it was too vague for me to decide whether I could use it.

The best value guarantee in their words is:

Getting the best value on your purchases is easy. Best Value Guarantee ensures that you pay the lowest price available on covered items purchased entirely with an eligible American Express Card. If, within 60 days, you find an identical item to the one you just purchased with the Card advertised in print at a lower price than you originally paid, American Express will reimburse the difference in price to you, up to $250 per item.

Calvin