This formula is in M3:
=IF(ISNA(VLOOKUP($D3,GrandToy2008,7,FALSE)),"",VLO OKUP($D3,GrandToy2008,7,FALSE))
And it returns a "0" in that cell when the VLOOKUP source cell is
empty. Sometimes, however, but not always, there will be no value
there but the "0" is a problem.

Because of that zero, the formula in the adjacent cell L3 is no longer
calculating correctly. I didn't have the L3 formula narrowed down to
a specific character so that it would work, the formula just would
return a complete rather than discounted value when the box in M3 had
an "X" in it. But I decided it would be smarter to put the "X" in the
VLOOKUP source sheet rather than adding them manually later as I then
don't have to look it up each and every time for any item ordered.
But this has thrown the entire sheet off as that zero value result
means that I get all "no discount" values returned now, no matter what
is the actual case.

Is there a way to fix that formula in M3 above, the
=IF(ISNA(VLOOKUP($D3,GrandToy2008,7,FALSE)),"",VLO OKUP($D3,GrandToy2008,7,FALSE))
one, so that if the corresponding cell in column 7 is empty that it
makes M3 remain completely and entirely empty anyway without adding
that "0"?

Thank you! :oD