Yahoo! Search Marketing (formerly Overture) doesn’t charge for sending invoices and reports are accessible via DTC 24hrs a day.
That said, Precision Match invoices are generated as follows:
1.Invoice summary – Shows amount of activity incurred in any given month 2.Account statement – Shows any transaction that occurred in any given month (credits, payments, etc) 3.Account summary – Detailed report showing avg CPC, total clicks and final cost
An advertiser may receive an additional invoice for their Site Match Xchange acct for charges that are valid. Hope that helps, if not, feel free to send me private mail.