• Walmart is offering a new membership bundle that combines Walmart Plus and Sam's Club Plus.
• The new combo includes both memberships for less than the price of a Costco Executive membership.
• A key feature of each membership is their increasingly fast delivery services.

Walmart rolled out a perk for its Plus membership programs, taking a shot at rivals Amazon and Costco.

The retail giant said Tuesday that it is offering a membership bundle that includes Walmart Plus and Sam's Club Plus for $120 per year.

That means existing Sam's Club Plus members now effectively get Walmart Plus included, and Walmart Plus members can add the premium-level club membership for an additional $22.

CEO John Furner took a not-so-subtle jab at Amazon and Costco in a statement announcing the news.

"Consider what people may be paying today: $139 for a retail membership with delivery. $130 for a warehouse club," he said, referring to their respective fees.

Walmart has been taking sharp aim at both retail competitors, with membership perks that overlap in several areas, like streaming entertainment, pharmacy services, and deals from partner businesses.

The biggest perk for Plus members — whether at Walmart or Sam's Club — is an increasingly fast delivery operation that fulfills orders from stores and clubs in as little as 30 minutes. Some orders have arrived in fewer than 10 minutes.

"The bundled offering screens as another signal of WMT pushing more value into its overall ecosystem, and highlighting its rapid delivery capabilities," Mizuho analyst David Bellinger said in a note.

Walmart doesn't disclose membership counts or fee revenue, but Mizuho estimates the chains have about 25 million Walmart Plus members and 30 million Sam's Club members. The bank also estimates an overlap of about 10% between Walmart and Sam's Club members.

Globally, Costco reported more than 150 million membership cardholders, and Amazon is estimated to have more than 220 million Prime members.

• Amazon is hiring more seasonal workers than ever this year.
• The company will also extend healthcare benefits for hourly workers on day one, starting on Jan. 1.
• Holiday hiring is shifting from traditional store jobs toward more e-commerce distribution roles.

Amazon plans to boost its seasonal workforce by 20%, assembling its largest temporary workforce ever.

The e-commerce giant aims to hire 300,000 employees during the holiday rush for its fulfillment and transportation network across the US. The target is up from 250,000 for each of the prior three years. It also plans to offer healthcare coverage on day one of employment for full-time, part-time, and seasonal hourly workers with at least 30 hours a week scheduled, starting January 1.

Seasonal workers who join before January 1 will begin receiving healthcare on that date, the company said. Workers who join after will have access from their first date of hire. The company hires seasonal workers year-round.

Amazon health plans start at $5 a week and include $5 copays. The company previously said part-time and seasonal employees qualified for medical insurance after 90 days, depending on the number of hours worked.

The company says seasonal employees can earn an average wage of more than $20 per hour, while full- and part-time regular employees see an average of nearly $24 per hour. Last month, Amazon increased its minimum pay for core operations workers to $20 an hour and gave all US workers new grocery discounts.

Seasonal hiring has been somewhat of a mixed bag this year, with some traditional retailers like Walmart and Target opting to tap into their existing workforces. Others, like Spirit Halloween, Michael's, and Dick's Sporting Goods have announced plans to collectively hire approximately 73,000 people this year.

A report last week from Indeed found that the seasonal hiring window is starting earlier in the year and shifting from conventional in-store retail toward more e-commerce fulfillment roles.

Amazon says its seasonal roles often fill within minutes of being posted, and that some seasonal workers ultimately find a longer-term position with the company.