Hi Jason,
Thank you for getting back in touch on this.
We're getting as far as this...

"Based on items with a specific value"
Total of "Quantity" where "giftwrap" has a value of "1" "times" "3.95"

...but there is no "giftwrap" in the drop down menu at the "Total of "Quantity" where "giftwrap" has a value of "1" "times" "3.95".
Our other 8 custom columns are in the drop-down though.
Delete WinFileCache (or whatever it's called! :o) ) and try again?
Thank you.
NJ