Hi, To restrict your request to a certain date range you need to specify the dateRange<http://code.google.com/apis/adwords/docs/reference/latest/CampaignService.Selector.html#dateRange>in your selector.
Another way is to request a CAMPAIGN_PERFORMANCE_REPORT via the ReportDefinitionService<http://code.google.com/apis/adwords/docs/reference/latest/ReportDefinitionService.html> and request the Cost field in it. The API cost will depend on how many campaigns are you going to be pulling via the CampaignService vs. how many times are you going to be creating a new report definition. While the cost of the CampaignService depends on how many campaign objects are going to be retrieved and the cost of defining a report is high but report downloads are free. So if you can define a re-usable report using the predifined dateRangeTypes<http://code.google.com/apis/adwords/docs/reference/latest/ReportDefinitionService.ReportDefinition.html#dateRangeType> then it might be cheaper to do it through reports in the long run. A reference to the API costs can be found here<http://code.google.com/apis/adwords/docs/ratesheet.html> . Best, -David Torres - AdWords API Team -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and discussion group: http://adwordsapi.blogspot.com http://groups.google.com/group/adwords-api =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en