https://read.macmillan.com/promo/terraformersshelfpro/
PRIZE: 100 Grand Prize(s) will be offered. The Grand Prize consists of a(n) one (1) Advanced Reading Copy (ARC) of THE TERRAFORMERS by Annalee Newitz. The approximate retail value (“ARV”) of the Grand Prize is $27.99 USD. The aggregate ARV of all prizes is $2799.00 USD.