15 surprisingly expensive things you can buy at Costco

Any shopper addicted to the mass warehouse that is the Costco superstore knows it's a place to stock up on bulk-quantities of household items, cleaning supplies, and grocery staples . Not everyone, however, knows about some of Costco's more high-end offerings like its $400,000 diamond engagement ring which recently made headlines .

Members of the wholesale retailer looking to spend some serious cash can also buy an emergency canned-food stash and a Bluetooth-equipped massage chair, among others. Here are 15 surprisingly expensive items to be found at Costco.

A larger-than-life teddy bear: $289.99

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The product description for Costco's 93-inch-tall plush bear says it all: "Need a Hug? Just go for it with this lovable oversized jumbo bear! A lifetime of love and companionship awaits you with this soft, cuddly friend ... Squeeze Away!!!"

A scooter that lets you travel underwater: $599.99

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The Sublue Whiteshark Mix Underwater Scooter (not pictured) has an interesting, if oddly specific, use: it claims to allow people to glide under the surface of just about any body of water. It weighs 7.7 lbs. and runs on an FAA-compliant battery, so travelers can bring the scooter with them on vacation.

A "Smart Toilet" with a seat-warmer and automatic flushing: $999.99

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Shoppers in the market for a luxury home bathroom experience may find just what they're looking for at Costco. The store's priciest toilet listed online is the Saga Smart Toilet by OVE Decors , and it has everything most people probably didn't know they needed (or wanted) in a toilet. It's equipped with a remote control, automatic flushing, LED night light, heated seat, and a built-in memory system that regulates water settings.

(TIE) A chandelier made with hand-cut crystals: $2,999.99

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Costco's highest-priced light fixture (not pictured) is the Lighting by Pecaso La Rioja Chandelier with 30 Lights , which has sphere-shaped, cascading crystals.

Out of the seven reviews of the chandelier on Costco's website, all users gave it five stars.

(TIE) Professional-grade espresso machine: $2,999.99

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For the same price of a crystal chandelier, caffeine-lovers can find joy in Costco's most expensive espresso-maker, the Z6 Automatic Coffee Machine . The product description on Costco's website says the high-tech machine is inspired by "the world's best baristas" and makes "possibly the best espresso of all time."

A queen-sized Murphy bed with a desk attached to it: $3,899.99

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This contraption combines the classic Murphy bed concept, a bed that pops out of the wall and easily folds back when not in use, with an office desk. This multi-use desk/bed combination proves Costco might really have it all ...

A beverage vending machine: $4,199.99

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Businesses can find tons of commercial-grade products and bulk items at the warehouse. This plug-in ready vending machine is the most expensive in its category on Costco's website, and it has surprisingly high-tech features like energy-efficient lighting and "built-in sales and accounting data," according to the product description.

A freestanding wine cellar: $4,299.99

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For only slightly more money than an entire vending machine, Costco members can buy a massive wine cellar. Costco's highest-priced wine storage unit stores up to 400 bottles, something wine-enthusiasts can definitely write home about. It includes cooling technology that remains at a "library quiet" sound level and a low-emission, energy-efficient glass door.

A years supply of emergency food: $4,999.99

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Costco means business when it comes to bulk which is why it has a product category called "Emergency Food by the Pallet." The most expensive supply of emergency food is the Mountain House 1-Year Food Storage supply , which retails for $4,999.99 on Costco's website. It includes 220 cans of food for a total of 3,986 servings, and it has a 30-year shelf life of freeze-dried foods. The supply includes snacks and full meal servings for breakfast, lunch, and dinner.

Mini grand electronic piano: $5,499.99

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The Roland Mini Grand Digital Piano Bundle is Costco's most-expensive piano at $5,499.99. It includes a 10-year in-home warranty, Bluetooth connection through a free iOS/Android app, and, according to an online review of the piano on Costco's website, a variety of sound and instrument playback options. According to one review, "It replicates many keyboard instruments such as a great jazz organ and electric piano."

Massage chair with built-in Bluetooth sound system: $6,999.99

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Most Costco members are aware of the retailer's deals on furniture and appliances, but not all shoppers know about its massage and relaxation products. The Osaki OS-4D Pro Maestro (not pictured) is $6,999.99, making it the priciest massage chair sold by Costco. It's not your mother's massage chair; this device includes luxury features like 4D heated rollers (which, according to the product description, give the illusion of hot stones), hi-def Bluetooth speakers, and settings like "knee kneading" and "ankle air massage."

A seven-person jacuzzi with a built-in lounge chair: $8,999.99

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The Evolution Spas Oxford 121-jet 7-person spa has one built-in, full-body lounger seat and three "captain's chairs," plus neck and shoulder jets for the ultimate massage experience.

Golden pearl necklace: $19,999.99

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Aside from gemstones, Costco also has a sprawling collection of pearl necklaces, bracelets, and earrings. At $19,999.99, this golden pearl necklace made of South Sea pearls is the most-expensive item from Costco's pearl jewelry collection.

A membership to Wheels Up private aviation service: between $17,499.99 and $29,499.99

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Not only can Costco shoppers use their membership to score deals on vacations , but they can also purchase a private plane service. Wheels Up is a membership-only private plane company that allows members to travel to and from destinations in style for up to a year.

Blue sapphire and diamond ring: $33,999.99

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Costco's jewelry selection includes everything from men's and women's watches to pearls and engagement rings . But aside from classic diamond engagement and wedding rings, Costco also sells a variety of colorful gemstone jewelry.

One of the most expensive rings is the blue sapphire and diamond ring , which retails for $33,999.99 at Costco. This oval-cut, 1.83-carat gemstone ring sits on a platinum band, and according to Costco's website, is inspected by a team of "graduate gemologists."