I’m not sure how I missed this one.
The Dresden Dolls live album A is for Accident (Collected live recordings 2001-2003) is available to download on a pay-what-you-want model from here. In this case “what you want” can also mean free, so you really have no excuse if you like their music.
You can also download their eponymous debut album under the same model from here. This one is definitely worth paying something for.