Hint: For improved responsiveness, use Internet Explorer
4 (or above) with Javascript enabled, choose 'Dynamic' from
the View dropdown and hit 'Set Options' to save your changes.
I can test at work tomorrow, but I was wondering if it's because I don't save the "Discount" while I save the "TotalPrice"... but, as I said, tomorrow I'll check again and eventually I'll tell you what database fields I have