Steam Gross/Net Revenue and Quarterly Reporting

Steam has Gross and Net revenue where Gross I believe excludes returns. It seems that they only have Gross revenue shown when you select the start and end dates to see a quarter’s revenue. I am worried that this does not account for weird edge cases such as a 100% return rate for that quarter. Anyways, should I try to find out how to report the Net revenue or just accept the Gross revenue and use that to report quarterly earnings?