For Prime members only, Amazon offers the Huggies Simply Clean Unscented Baby Wipes 648-Count Box for $11.08. Add it to your cart via Subscribe & Save to drop the price to $10.53. With free shipping, that's $0.02 per wipe and about $2 less than you'd pay at a local retail store. (We saw a similar pack, which lacked the aloe vera and vitamin E, for $2 less last month.)
Be sure to cancel Subscribe & Save after your order ships, or you'll be billed for subsequent shipments.