The SQL statement for a query to do that would be
SELECT ProductID
FROM SomeTable
WHERE Price = DMax("Price","SomeTable")
OR
SELECT TOP 1 ProductID
FROM SomeTable
ORDER BY Price DESC
IF you need something more specific post more details on what you are
attempting to do.
John Spencer
Access MVP 2002-2005, 2007-2010
The Hilltop Institute
University of Maryland Baltimore County