Check out the chart below to find out just how much you are spending and just how much you could be saving on baby wipes. 1  Buy generic and in bulk. 2  A 400 count case of Walmart brand wipes costs about $8 at this writing. 3  This comes out to about $0.02 per wipe, or $58 for the year.his comes out to nearly $0.05 per wipe! If you only use one wipe per diaper change (you will most certainly use many more!), then you will spend around $150 for wipes over the course of your baby’s first year. There are a number of ways to reduce your baby wipe costs.