saltstack/salt-cloud — pull request #740 by abemusic (2013-08-20 20:23:13+00:00)
Title: Adds spot instance support to EC2 driver

For each VM in your map, add

```json
"spot_config": {
"max_price": "0.1"
}
```
where `max_price` is the maximum price you're willing to pay for the spot instance. For more information on EC2 spot instances, see http://aws.amazon.com/ec2/spot-instances/