Amazon offers the Dude Wipes Individually Wrapped Flushable Wipes 30-Count Pack [amazon.com]
for $7.19. Add it to your cart via Subscribe & Save and the price drops to $6.83 at final checkout. With free shipping, that's the lowest total price by $3. Each unscented wipe measures 44 square inches, has vitamin E and aloe, and is biodegradable.
Note: Be sure to cancel Subscribe & Save once your order ships or you'll be billed for subsequent shipments.