Kara Swisher and Walt Mossberg look way smarter now that they've doubled Re/code's sale price in just two months

In May, Kara Swisher and Walt Mossberg sold their 18-month-old tech trade publication Recode to Vox Media for an undisclosed amount.

Sources familiar with the deal told Business Insider then that Recode was acquired in an all-stock transaction, worth between $15 and $20 million, with additional stock incentives for Recode's executives.

That $15-20 million figure was based on Vox Media's November valuation of $380 million.

It was perceived by the tech community as just an ok exit. Recode only had 3 million monthly unique visitors and it had raised $10 million at a ~ $28 million valuation at its onset, which is more than Vox paid for it. Media pundits were quick to poo-poo the deal, proclaiming "Kara Swisher has lost!"

Today, however, Mossberg and Swisher's exit looks much better.

That's because Vox Media is reportedly raising a new round of financing from NBC Universal that would value the company at $850 million, making Swisher and Mossberg's all-stock deal 2.2 times more valuable today than it was two months ago. So that $15-20 million exit is more like $30-40 milllion. The news of Vox's fundraise was broken today by Swisher and her colleague Peter Kafka.

(It's worth noting that NBC Universal was also a main investor in Recode).

It's still not a home run by most Silicon Valley standards, but if you think companies like Vox are the future CNNs and media conglomerates, there's no reason that $30 million exit can't turn into a $100 million+ one in a few years time.

Swisher declined to comment on Recode's new improved price tag. But it's easy to imagine she thought Vox's valuation could soar later this year.