I have a column of text labels, with subtotals denoted by "TOTAL", and a
corresponding column of amounts. However, the latter includes some B-cells
with text, but none where the corresponding A-cell is "TOTAL".

I would like to write:

=SUMPRODUCT(EXACT(A1:A54,"TOTAL")*B1:B54)

to sum the subtotals. But the text in some B-cells causes a #VALUE error.
I tried:

=SUMPRODUCT(EXACT(A1:A54,"TOTAL")*N(B1:B54))

to no avail; the result is zero. I also tried:

=SUMPRODUCT(EXACT(A1:A54,"TOTAL")*IF(ISNUMBER(B1:B 54),B1:B54))

That, too, results in zero. So far, the only thing that works is the array
formula:

=SUM(EXACT(A1:A54,"TOTAL")*IF(ISNUMBER(B1:B54),B1: B54))

But I was hoping to avoid an array formula by using SUMPRODUCT.

Is there a non-array formula solution?