I've never thought of checking prices on cards, didn't even realize they had salles on them. But I do buy my cards well in advance because time seems to fly and I sometimes look at the calendar and realize I have to make a mad dash for a card. Now that you've mentioned this I'm going to check out the cards everytime I'm in a store and get them on sale if possible. Like you I'll have to add a footnote somewhere to remember where I put them...