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In recent articles I highlighted the acceleration in iTunes App downloads where the rate is approaching 18 million apps per day and the cumulative total apps which is about to overtake the cumulative songs downloaded.

We now turn our attention now to constructing the iTunes income statement: namely total sales, gross margins and deduce its operating budget.

Gross Sales

To obtain the top line (income) for iTunes we need to know the average selling price (ASP) for songs and for apps. Apps are easy, we received that info in June: $0.29 per app. For songs, it was easy before early last year: $0.99/song. After the selective price increase, the blended price needs to be estimated. I chose $1.10 for 2009 and $1.2 for 2010. These are just assumptions and can be adjusted but should give us a rough estimate:

I followed the convention of using income rate or $/month to show the history of sales. It shows that even with a price less than a third of the music product, apps are generating over half of the sales of music. In other words, apps are adding 50% to iTunes sales today. If the decline in music units continues and the app sales increase with the current trajectory then app sales value will overtake music sales next year, consistent with the cross-over of cumulative units sold.

Gross Margin

If we know how much Apple pays music licensors and developers (i.e. cost of goods sold) we can calculate how much it keeps for operations (gross margin). Apple’s app margin is 30 percent. The music margin was never official but the consensus has been 10 percent for a while.

Using these figures, we get the following chart:

This shows that what is left after paying the content license, Apple “keeps” about $50 million every month to run the App store (iTAS) and another $30 million to run the Music store (iTMS).

The Operating Budget

Apple has made a point of saying that both iTAS and iTMS are run at “break even” implying that the gross margin is used up in operating costs (CAPEX, R&D, SG&A). To be sure, the cost of bandwidth and the data center(s) needed must be considerable.

But the operating budget for the store is beginning to reach a level that may be beyond what can be spent reasonably. The amount left over for operations has increased from ~$30 million a month in 2009 to $75 million/month today.

In fact, if this burn rate is maintained (even though it’s increasing) the operating budget for iTunes is nearing $1 billion/yr.

I’m not an expert on the cost of operating data centers but $ 1billion a year seems like a lot. I would love to see an analysis of how this could be allocated.

Implications

I would also add that because of the increasing mix of apps, the overall gross margin percent is increasing. I estimate that to be a blended 17%–a healthy margin for a content store–and an increase from 10% before the app store came online.

Finally, one implication of the economics involved is that a budget like this may provide a significant barrier to entry for any competitors looking to take on the iTunes juggernaut. iTunes has reached content critical mass (12 million songs), user base (160 million users) and wide distribution (23 countries for songs and 80+ countries for apps).

These are non-trivial operational issues that even the best in the “cloud” business models will find challenging.

Footnote:

This discussion excludes video sales, rentals, book sales as we don’t have solid histories for these product lines. However, we can do a spot check on the cumulative totals:

• 450 million TV episodes downloaded implies $1 billion in sales.
• 100 million movies downloaded probably adds at least another $1 billion
• 35 million books adds another 500 million.
• Compare with 11.7 billion songs at ASP of $1 for about $12 billion in song sales and 6.5 billion apps at ASP of $0.29 or about $1.9 billion.

iTMS content downloads have generated $16.4 billion in sales to date.