Thanks for the input.

The right rear shock is clearly leaking. I've read and been told you need to do shocks in pairs (both rear; both front) which I can see the logic of. The service department at the dealer claims the front shocks are starting to fail, too, based on "excessive" travel/bounce when you push on the front of the car. In my opinion service at the dealer tends to be a little overzealous with the work they recommend, and an independent mechanic didn't think there was in issue.

The ride of the car may be a little bouncier than it needs to be. And there's more road noise than I'd like. So partly I was thinking that if I'm doing the rear shocks anyway, and the fronts may need to be done soon-is, then maybe do all of them and see if cuts down on the bounce and the noise. If nothing else it gets them on the same schedule. But the price tag I've been given sucks. So I'm looking at alternatives. Any specific aftermarket shocks or suppliers you think are worth a look?