**To describe Spot price history** This example command returns the Spot Price history for m1.xlarge instances for a particular day in January. Command:: aws ec2 describe-spot-price-history --instance-types m1.xlarge --start-time 2014-01-06T07:08:09 --end-time 2014-01-06T08:09:10 Output:: { "SpotPriceHistory": [ { "Timestamp": "2014-01-06T07:10:55.000Z", "ProductDescription": "SUSE Linux", "InstanceType": "m1.xlarge", "SpotPrice": "0.087000", "AvailabilityZone": "us-west-1b" }, { "Timestamp": "2014-01-06T07:10:55.000Z", "ProductDescription": "SUSE Linux", "InstanceType": "m1.xlarge", "SpotPrice": "0.087000", "AvailabilityZone": "us-west-1c" }, { "Timestamp": "2014-01-06T05:42:36.000Z", "ProductDescription": "SUSE Linux (Amazon VPC)", "InstanceType": "m1.xlarge", "SpotPrice": "0.087000", "AvailabilityZone": "us-west-1a" }, ... } **To describe Spot price history for Linux/UNIX Amazon VPC** This example command returns the Spot Price history for m1.xlarge, Linux/UNIX Amazon VPC instances for a particular day in January. Command:: aws ec2 describe-spot-price-history --instance-types m1.xlarge --product-description "Linux/UNIX (Amazon VPC)" --start-time 2014-01-06T07:08:09 --end-time 2014-01-06T08:09:10 Output:: { "SpotPriceHistory": [ { "Timestamp": "2014-01-06T04:32:53.000Z", "ProductDescription": "Linux/UNIX (Amazon VPC)", "InstanceType": "m1.xlarge", "SpotPrice": "0.080000", "AvailabilityZone": "us-west-1a" }, { "Timestamp": "2014-01-05T11:28:26.000Z", "ProductDescription": "Linux/UNIX (Amazon VPC)", "InstanceType": "m1.xlarge", "SpotPrice": "0.080000", "AvailabilityZone": "us-west-1c" } ] }