Buy any 3 or more wallcharts from this website (separate titles or multiples) and you will automatically receive 30% off your entire order. Plus, you get free shipping if you are in the US or Canada. That works out to be less than $14 per chart. The discount will be automatically applied after you click checkout.
Note: Higher discounts are available for schools, resellers, or homeschool groups wishing to place orders of 12 or more charts. Contact firstname.lastname@example.org for details.