Update on my RideGear experience: I finally got an email back from them in which they actually addressed me by name. They said that PayPal has been slow in getting refunds to customers, but they (RideGear) have put me on a "priority" list.
So, I'm still steamed, but at least I got a reply. Oh, and I gave up on trying to talk to PayPal for now. Best wait-time I ever got on their customer service line was 15 minutes.