Can't Sum numbers generated by a formula

[3xcel.Noob]

Hi,

I'm making a quick financial aid to help me keep track of my expenses. I copy my credit cards expense on a line, and then I use this formula to divide my expenses into different groups:

=IF(ISNUMBER(SEARCH("provigo",B2)),D2,"")

So if excel sees "provigo" in the description, it copies the cost manually added into cell B2 in a new cell (D2) under the column title "grocery" to help me know how much I spend on groceries.

Except when I sum all the numbers in the "grocery" column, it gives me 0. No idea why. The cell is defined as currency, and I've tried "Text to columns" option (maybe incorrectly) and it doesn't work. See attached excel.

Thanks in advance.