Costco Price Cut: Tiramisu Cake $11.99

9/7/12. Some Costco locations may have the Tiramisu Cake (in the bakery section) on sale for $11.99 (after manufacturer’s instant rebate), from September 13 through October 7, 2012. That is $2 off Costco’s regular price of $13.99. While I am a big fan of this cake, my mother is not. While supplies last. This was spotted at the Covington, WA location. Price and participation may vary so it may…