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Jet.com CEO Marc Lore doesn’t need to beat Amazon. He’d be pretty happy with second place.

"There’s plenty of room for more than one player," Lore said on the latest episode of "Re/code Decode." "The market is massive."

How massive? Lore said he expects e-commerce in the U.S. to grow from $300 billion to $1 trillion in the next 10 years.

He also told Re/code’s Senior Commerce Editor Jason Del Rey that spending aggressively on marketing will be crucial to Jet’s future. The more the company grows its online-shopping user base, the faster it can turn the upfront overhead costs of launching a wannabe-commerce giant into a fraction of its business.

"It’s costing us $50 to get a customer, and the lifetime profit range is well north of that, even at the bottom of that range," Lore said.

Later in the show, on "Too Embarrassed to Ask," The Verge’s Lauren Goode and Re/code’s Ina Fried joined Kara Swisher to talk about Apple’s new battery case for the iPhone 6, a.k.a. "The Hunchback of Cupertino." You can tweet your tech-related questions with the hashtag #TETA at @KaraSwisher, @LaurenGoode or @Recode.

And we’re thrilled to remind you that "Re/code Decode" is now twice a week. Last Thursday, Re/code’s Senior Media Editor Peter Kafka spoke to NFL media czar Brian Rolapp, and this coming Thursday, he will be talking to Katie Nolan, the host of "Garbage Time" on Fox Sports 1.

If you like what you hear on "Re/code Decode," you should check out "Re/code Replay," an archive of audio content from our events and interviews by Kara Swisher, Walt Mossberg, Peter Kafka, Ina Fried and more.

Every episode of both shows is available in two places: On the Re/code Radio homepage and on Apple iTunes (here for "Re/code Decode" and here for "Re/code Replay").

You can follow @Recode on Twitter for the latest on upcoming guests.

If you like what we’re doing, please write a review on iTunes — and, if you don’t, just strafe Kara on Twitter. You can also suggest guests for the show there and we’ll do our level best to nab them for a Red Chair interview.