Live without some item you think you need for a week, and count how many times you would have used it. If the week goes by, and the need has passed, pat yourself on the back for saving the money. Use a large Tupperware-style container and place the roll inside. Remove the cardboard core and pull the wipes out from the center. Store in a cool to room temperature place.
Baby can even suck on a wet one without much harm.
If it's a cheesy plastic thing with limited half-life, DO NOT buy it new. You can just bet the very same thing is available at a garage sale, a thrift shop, or somewhere for less than half. Really nice plastic things often end up in the thrift store too. Use your common sense. Let the baby play with the ribbon and box as well as the toy.