Pile of Indexcards

I have been to San Francisco to attend meeting. In my spare time, I walked around Moscone Convention Center. I tried to look for an indexcard.

I found a stationery store close to the SFMOMA. The indexcards occupy a corner. There are 5x3, 6x4, and larger index card available. What is curious for me is there are a lot of colors, blue, yellow, red indexcards. I could find plain and ruled indexcard. Same time, I disappointed that I couldn't find quadrille card in the store.

I found Office Depo, too. I could find indexcard with "Office Depo" brand. The price is relatively cheeper. This time I could find quadrille card from the "Office Depo" brand. But it is enough to make me surprise.