From bars of 24-karat gold to huge portions of freeze-dried emergency-survival food and even caskets, here are the strangest things you can buy from Costco

• Costco is known for selling an eclectic range of merchandise.
• Some items, like its luxury jewelry, are really expensive, while others are sold in massive packs.

You can buy almost everything at Costco, it seems.

The retailer is known for selling items in huge quantities – think a 64-ounce jar of Heinz Mayonnaise, a pack of rice big enough to make 227 portions, or a six-pound box of Bisquick pancake mix.

But you can also splash out on big-ticket items, including luxury seafood and jewelry that costs tens of thousands of dollars.

And there's a selection of odd and unusual merchandise, too, that you might not expect to get. Costco sells bars of gold, caskets, and tickets to NBA and MLB matches, as well as gift cards that offer you substantial savings on restaurant brands, cinema tickets, Southwest Airlines flights, and gaming downloads.

Here are some of the strangest items that Costco sells.

Costco is known for selling items in massive quantities – especially at its Costco Business Center. You can buy 6.6 pounds of Nutella or corn, a 48 pack of Pop-Tarts ...

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Sources: Costco, Costco, Costco

... or a 75-pound wheel of Parmigiano Reggiano.

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Source: Costco

For $2,000, you can splash out on a 35.2-ounce tin of caviar that Costco has "no doubt" will impress even "the most discerning caviar enthusiast." Other luxury seafood available from Costco include seven pounds of Alaskan giant red sea cucumber for $320, and 12 octopus tentacles for $160.

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And if you're a prepper, you can stock up on a pack that includes 5,400 servings of freeze-dried and dehydrated meals and drinks, including pasta, cereal, and orange juice. The listing says the items have a 25-year shelf-life and just need water to prepare. With a $3,000 price tag, they work out at just over $0.50 per portion.

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Source: Costco

You can also stock up on bottled water – this 1,960-piece pack works out at all $0.23 per bottle, though in some states a bottle fee applies.

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If you're stuck for holiday gifts, Costco is selling a huge set of 60 towers of Godiva chocolates, pretzels, and cocoa. They're currently on offer for $2,000, putting the cost at around $33 per tower, each of which contains just under 16 ounces of treats plus a pack of cocoa.

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Source: Costco

As well as food and clothes, Costco sells furniture, electrical appliances, and even chicken coops. Costco says this coop made by Amish trained craftsmen "comfortably houses up to 15 chickens" and takes less than 60 minutes to assemble.

The OverEZ Farmhouse Large Chicken Coop.      Costco

Source: Costco

If you want to spruce up your garden, Costco offers a 10-by-20-foot Victorian-style greenhouse for $11,000. Costco warns shoppers that the total weight of the set can be up to 2,000 pounds and that they may need a permit before building the greenhouse.

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Source: Costco

In September, Costco sold a massive 157-piece Le Creuset set for $4,500, including stoneware, frying pans, Dutch ovens, and utensils. Costco said the set would be delivered on a pallet, which the customer would get to keep, using a lift gate truck. The set is currently listed as out of stock.

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Source: Business Insider

For $1,300, you can splash out on an "intelligent" one-piece toilet. As well as an integrated bidet, warm air dryer, and heated seat, it also comes with a carbon filter odor neutralizer and even a night light.

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Source: Costco

There's a range of massage chairs available. If you have $8,500 to spare, you can opt for this voice-controlled one which has a zero-gravity setting and health monitors that measure your heart rate, blood oxygen levels, microcirculation, and fatigue index.

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Source: Costco

You can get your hands on a variety of arcade machines and "partycades."

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Source: Costco

Passionate golfers who want to practise at home can splash out on a $20,000, 13-foot golf simulator made by Foresight Sports.

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Source: Costco

Costco sells what it describes as the world's largest puzzle, made up of 60 1,000-piece puzzles that combine to create a map of the world surrounded by paintings of various cities and sights by Eric Dowdle. It weighs in at about 75 pounds.

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Source: Costco

Costco may not be the first place that springs to mind when you think of luxury jewelry, but the retailer has dozens of pieces over the $10,000 mark. That includes this $350,000 diamond ring, which has 57 stones in total, the primary one weighing in at 1.54 carats.

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Source: Costco

The luxury offerings aren't just for adults, though. Costco is selling a 93-inch-tall plush bear that weighs in at 48.5 pounds and costs $400. A rainbow version of the bear is out of stock. Costco warns, though, that they're not suitable for children under three.

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Source: Costco

Caskets are one of the more unexpected items Costco sells. The retailers currently lists eight designs on its website, all of which are only available online and have to be delivered directly to funeral homes and cemeteries. The listings note there's "no scientific or evidence" that a casket with a sealing device will preserve human remains.

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Source: Costco

If you're in luck, you might even be able to snap up a one-ounce bar of 24-carat gold on Costco's website. The company limits them to two per customer and its CFO warned that "when we load them on the site, they're typically gone within a few hours." The bars generally have very favorable reviews on Costco's website.

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Source: Business Insider

What you may not realize is that Costco sells a bunch of tickets to sports matches, too, including NBA, MLB, and NHL, some of which come with food and beverage credit. Other tickets up for grabs include ones for Cirque du Soleil.

Daniel Shirey/Getty Images

Source: Costco

You can also get a ton of gift cards that can save you a considerable amount of money. For $80, you can get $100 gift cards for chains like Domino's, Papa Johns, and Red Lobster. Other deals include a $500 Southwest Airlines gift card for $450, a $50 Cinemark gift card for $40, and a variety of gaming gift cards.

Analysts say Papa Johns is well positioned for the long-term that to is value and premium offerings.      Papa Johns

Source: Costco

And if you want to recreate the excitement of shopping at Costco at home, you can get your hands on a jumbo-sized, themed Monopoly set for $45. The tokens include a pizza slice and a shopping cart, while railroads are replaced with store departments like a bakery and a deli.

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Source: Costco