+ wishlist Add to Cart The item has been added Author: Guy Powell Steven Groves Jerry Dimos ROI of Social Media: How to Improve the Return on Your Social Marketing Investment [9780470827413] Buy More - Save More. Below are the available bulk discount rates for each individual item when you purchase a certain amount Quantity Price Savings 25 - 99 15% 100 - 249 16% 250 - 499 17% 500 - 999 18% 1000+ 20% List Price As Low as $33.00 Format: Hardcover