Amazon has the Gel Pens for Adult Coloring Books, 30 Colors for only $7.00 or cheaper when you clip the 10% off coupon! These are SO fun to have around the house. Keep in mind, Amazon pricing can change at any time! Don’t wait to purchase this deal or it might be gone when you come back! This item will ship free for all Amazon Prime members. Or, regular members can score free shipping by adding $25 or more worth of eligible items to your cart. You can get a 1-week trial of Amazon Prime for only $1.99 here.