Walmart offers Pet Sematary on Blu-ray for $5. (Amazon has it for the same price.) Opt for in-store pickup to avoid the $5.97 shipping fee. That's at least $10 less than you'd spend at another local retail store.
Walmart offers preorders of the Labyrinth 30th Anniversary Edition on 4K Ultra HD Blu-ray / Blu-ray / Digital HD for $19.30. Choose in-store pickup to dodge the $5.97 shipping fee. (Amazon charges the same with free shipping via Prime.) That's the lowest price we could find by $8. It features fully restored picture and sound, a 7.1 Dolby soundtrack, and a selection of all-new special features. It's scheduled for release on September 20.