6 Must-Have Buys at Costco for Big Savings Before Halloween

Have you checked out Costco’s Halloween inventory yet? From detailed costumes for the kiddos to festive decorations starring all your favorite animated characters, members save more money buying these products at the warehouse club compared to shopping at specialty retailers.

GOBankingRates surveyed some of Costco’s hottest Halloween products and pulled six of the most amazing ones. Here’s what we recommend buying.

• Price: $37.99

Only a handful of kid’s sizes are still in stock for Teetot’s dinosaur children’s costume. The online-only dragon scale printed jumpsuit comes complete with attached gloves, foot covers, a dinosaur headpiece and spiked tail for a truly dino-mite look. 

Positive reviews praise the costume’s fit and high-quality fabric. The only major concern from shoppers? The kiddos might wear it out before Halloween arrives.

• Price: $49.99

While Costco carries several “The Nightmare Before Christmas” themed treat bowls this year, members have left countless reviews saying the Oogie Boogie bowl is worth every penny. 

The online-only treat bowl has been complimented for holding plenty of candy and the attention to detail in the bowl’s design. Careful use and packaging once the holiday is over ensures households will be able to reuse the bowl for many more Halloweens to come.

• Price: $37.99

Make a splash in Teetot’s sparkly mermaid costume! For less than $40, you’ll receive a metallic mermaid dress complete with a ruffled fishtail, mermaid cape, tiara and wand. This children’s costume is available online only, so make sure to shop your preferred size before it’s sold out.

• Price: $14.97

Celebrate spooky season with “The Simpsons” Treehouse of Horror countdown calendar. Each of the 31 windows features a figurine from a classic Treehouse of Horror episode like the school bus gremlin, vampire Mr. Burns and evil Krusty doll (if you watch the series, you’ll get these references).

• Price: $129.99 (regularly $159.99)

Households who love Bluey won’t want to miss out on buying the Bluey family Halloween inflatable set to decorate their home. These inflatables are designed for indoor and outdoor use and self-inflate with 10 LED lights. Now through Oct. 14, members save $30 on their purchase.

• Price: $37.99

Your kiddo is sure to win costume contests for originality in a Teetot pink flamingo costume. This online-only ensemble comes with a flamingo pink dress and multi-layer skirt, headpiece and pink foot cuffs with webbed feet. Choose from a variety of child’s sizes while supplies last.

Disclaimer: Prices and availability accurate as of Oct. 5, 2025 and subject to change.