Best Buy offers Shrek: The Whole Story on Blu-ray Disc for $19.99. (Amazon charges the same for Prime members.) Opt for in-store pickup to avoid the $3.99 shipping charge. That's the lowest price we could find by $20, although we saw it for $2 less in December. This 4-disc set includes Shrek, Shrek 2, Shrek the Third, Donkey's Christmas Shrektacular, and Shrek Forever After.