Advice on Bargaining With Used Car Dealers?

It's a popular car, so unfortunately the dealer will know they can shift easily enough.

I'd keep quiet about what your limit is to start with, just say it's out of your price range and ask them just how low they can go. They might even undercut what you were thinking (although unlikely on that particualr model for the reasons above)!

As albertross says, always be prepared to walk away. It's quite easy to fall in love with the car, or even the idea of a new car, so taking someone with you to act as the voice of reason is a good idea. They don't even need to be knowledgeable, just objective. As long as they know that you will walk if you don't get the right deal you have a strong bargaining position. It's not you that needs to make the sale.