Platinum Buys via Amazon offers Amazon Prime members the Angry Birds 5-Piece Dog Toy Set for $13.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.04.) That's the lowest total price we could find for this quantity of Angry Birds pet toys by $10. They feature sound effects.

Amazon Prime membership is $79 per year; however, Prime is free for college students for six months, and free for parents and caregivers for three months. (Note that currently there's a waitlist for Amazon Mom.)