Jacob Goldstein of NPR's Planet Money took a look at the economics behind The Magazine, the iPad-only publication created by Marco Arment of Instapaper and edited by Jeopardy champion and Macworld/TidBITS contributor Glenn Fleishman.

The Magazine launched late last year with essays from well-known, technology-focused writers such as Jason Snell, Lex Friedman and Harry Marks. The Magazine is published every two weeks and costs US$1.99 for a monthly subscription.

Unlike most online ventures that struggle to get off the ground, The Magazine already has 25,000 subscribers and is pulling in a healthy profit. You can read more about the financials of The Magazine and the reasons why Arment started the venture on Planet Money's website.

This article was originally published on Tuaw.