>There are certain kinds of interface when 'calculated' column is not really calculated :), i.e. interface provides users with tools to make adhoc calculation and save result without caring how it was reached. For example, it may allow to apply random discounts to price, 5% (not right ?), ok then 5% more, 4% more etc. until 'final' result (i.e. satisfactory for a customer on phone) is reached. This way 'calculated' field should be saved, though I'm unsure if it's the case for this thread.

Agree, but this is not calculated :-) this is USER DECIDED what the price must be. And in the report that will look terrible:

Qty        Unit Price   Total
-----------------------------
10            10          45

Grrrrrrrrrr
Better add an additional column with discount where the user can add the discount and keep calculated coluln out of the table :-)