Google Sheet reconciliations

I would like someone to perform monthly comparisons of google sheets, looking for completeness and accuracy. Report on discrepancies of several attributes across two sheets in separate workbooks (order numbers, $, fees, returns, etc. from one sheet to the other). For now this would need to be done for about 6 sets of sheets but that number will grow. Would like the results presented in an exception-based format. Looking for a price per reconciliation.