VLOOKUP and COUNTIF but kept getting errors

It sounds like your data being compared is inconsistent,
ie you could be trying to match text numbers with real numbers or vice versa

Try these variations:
=vlookup(A2&"", ... )
A2&"" will make the numeric product code into text nums, w/o impacting on its intrinsic value
This presumes your reference lookup data (ie the 1st col in the range) are text numbers

=vlookup(A2+0, ... )
A2+0 will make the text number product code into real nums, w/o impacting on its intrinsic value
This presumes your reference lookup data (ie the 1st col in the range) are real numbers
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