I didn't have any sales on Revo in Sep (with a port of about 450 files), but I did have sales in each of the preceding 4 months, including two months with 3 sales each, so I wouldn't say they are dead.
I think they are doing their best to climb out of the deep hole that that patent troll buried them in. The new site changes are a great start, but only time will tell whether or not they can lure more buyers in. I certainly wish them well, because we need more sites that treat contributors fairly, not fewer.
(Ignoring the fact that they still owe me money from last year ....
) ETA: Paid!

I agree with Mantis; your pricing seems fine. That isn't the problem.