My 2026 11" x 11" refill fits Kim's Calendars' "large" holders. My refills cost more on Amazon than on your order form or my site because Amazon charges me a monthly fee plus 15% of the price. I also have to mail my refills as a First Class Package which costs me about twice as much as First Class mail. The benefits, however, are that your refill is packaged with rigid cardboard, you receive tracking information and you'll receive it more quickly! Thanks for your understanding. ~Kim