Amazon Local offers a $30 My M&Ms Credit for $15. That's tied with our January mention as the best deal we've ever seen for My M&Ms. (We've listed discounts ranging from 10% off to 25% off sitewide.) This merchant sells personalized M&Ms. Only one voucher may be used per order, but it may be used towards shipping and tax. Deal ends April 30 at 2:59 am ET; vouchers expire on July 11.