If you meet a very specific set of requirements, you may be eligible to receive up to $55.

In accordance with the results of a class-action lawsuit, those of you who purchased certain models of PlayStation 3's between November 1, 2006, and April 1, 2010, may be eligible for a $55 refund.
The lawsuit in question pertains to Sony's 2010 decision to block the ability of the PlayStation 3 "fat" (the system's original model) to run Linux as part of the system's OtherOS feature. As it turned out, there was a pretty adamant group of PlayStation 3 fans that specifically bought that system in order to take advantage of its Linux capabilities, and they were not happy to hear that they would no longer be able to do so. As such, they filed a lawsuit against Sony in 2010 on the grounds that the company had falsely advertised this major feature that they were now taking away.
It took six years of deliberation, but a court finally ruled back in June that Sony must compensate those users that were affected by this change via a $55 refund.
This is where the matter gets a bit complicated. As you might imagine, Sony isn't eager to just give every PS3 owner a $55 refund. In order to receive it, you will have needed to purchase the original PlayStation 3 model between the dates listed above, provide proof to Sony of your purchase of said console in that time frame, provide proof that you used the OtherOS features in question, and you will need to wait up to over a year upon submitting all of this information in order to receive your compensation.
Furthermore, all those who file a valid claim will be unable to sue Sony again over this matter. Alternatively, you can also receive $9 in compensation if you did not use the OtherOS features, but submit all the other information required along with a claim that you had intended to do so.
Needless to say, if you intend to take advantage of this offer, it would be best to start your paperwork now.