Costco is always full of surprises.

However, the changes that capture members' attention the most often revolve around the store’s rotating inventory.

Today, let’s examine 10 of these legendary products that caused absolute chaos among Costco shoppers.

A slice of Costco’s popular Peanut Butter Chocolate Pie set against a vibrant background.

Photo: Costco/Facebook. Design: Eat This, Not That!

One is theinfamous wine calendarfittingly called “Wineadvent-ure” packed with 24 half-size bottles for $99.99.

They both tend to bubble up on shelves starting in October.

My jealousy knows no bounds."

brewer’s advent calendar

Original Kalea

Another added, “They’re already all gone from my warehouse.

Like they never existed.”

Get your paws on them while you’re able to!

kirkland pet hoodie

Costco

But, none of these sagas are quite as nutty as the store’speanut butter chocolate pie debacle.

However, mere days after its release it was already missing from the warehouse’s industrial-sized coolers.

I was disappointed to see there weren’t any.

Costco chocolate peanut butter pies

Photo: Chris Shott, Eat This, Not That!

As in, not even a space where they should have been."

Ingredient sourcing was thrown out as a top issue as well as the pie’s labor intensity.

It sounds like both making and obtaining this confection were far from easy as pie.

Costco Pokemon Cards

r/Costco/Reddit

“Apparently the ones in the all red packaging are in higher demand.

It sounds like a repeat of the Pokemon Go obsession from 2016.

Cheese Flights

Costco shoppers are all about catching flights.

Costco cheese flight

Instacart

And, before you ask, no, we’re not talking about the club’s unbeatable travel deals.

We’re talking about the store’s curated cheese flights which can be found in the dairy department.

“These sell out fast and seem to be in select stores!”

Costco Gold Bars

Costco

Instagrammer@costcodealswrote in a post about the summer edition flight.

“Grab it if you see it!”

Charcuterie nights have never been easier, or more fleeting.

Costco 22-Inch Metal Chicken

Costco

However, it seems that this new high price hasn’t stopped members from continuing to stack their safes.

Talk about a gold rush.

The quirky bird wasfirst discovered on the warehouse’s online store in Julyand shown offon Reddit.

Article image

r/Costco/Reddit

But, to many admirers' dismay, it sold out before they could get their hands on one.

It was even reported that Costco accidentally oversold the item and some customers' orders had to be canceled.

But, that doesn’t mean that the big-box store is devoid of all things lavish.

Pendleton Weighted Blankets

Costco

Then, throw Costco’s unbelievably low prices into the mix and you have yourself an all-out frenzy.

Costco has also offered 15-pound or 20-pound versions of the blanket.

But, inreviews on the Costco website, others praise the coverings for their sleep-aiding abilities.

Kirkland Signature Irons Set

Costco

“I didn’t even get a shot.

Sold out asap,“commented one disgruntled golfer.