Past examples have been switching to Pepsi and getting rid of onions.
Related:
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-raise-the-price-19039ae96bcc
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-raise-the-price-7c776494ad5e
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-raise-the-price-675a4f00d1c3
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-raise-the-price-fbab9e426f96
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-raise-the-price-b45f07086d91
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-raise-the-price-8affdf845700
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-further-devalue
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-further-devalue-ab22f774fa11
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-further-devalue-b82cceb7879f
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-further-devalue-b2acdbc89426
https://manifold.markets/BenjaminIkuta/will-costcos-in-us-further-devalue-ff68b26bf667