Volume discounts are automatically applied for orders with 10 or more books. If you have a promo code that will give you a better deal than the volume discount then you can enter your promo code instead--that will remove the volume discount.
If you change your mind, empty your cart and start again, and the volume discount will reappear. (In most cases, our marketing promo codes have a maximum amount, such as a $100 cap, so you might be better off keeping the volume discount).
Discounts for schools, non-profits, professional photographers, etc.
Blurb does not have a specific discount option for professional photographers, schools, non-profits, or other organizations. However, if you'd like to request that Blurb sponsor your event or donate a prize (as for a charity raffle) please contact customer support and we'll connect you with our sponsorships department.