Note: This is a guest post by Matt Richman. You can learn more about Matt on his Web site.

RIM just reported earnings (PDF) for its second fiscal quarter of 2012. Seventy-three percent of its $4.2 billion in revenue came from the sale of hardware, which includes Blackberrys and Playbooks. This means RIM brought in $3.066 billion from hardware sales.

RIM shipped 10.6 million Blackberrys and 200,000 Playbooks. Assuming the average selling price of a Playbook is $554 (what I used last quarter), then RIM brought in $2.9552 billion in revenue from the sale of 10.6 million Blackberrys.

That means the average selling price of a Blackberry this quarter was $278.79. It rose 3.80% over last quarter’s $268.56, but it’s still down 7.76% over the last six months.

The following chart shows the average selling price of a Blackberry since 2009: