Subtract Min() from MAX()

[airgrz]

I am trying to Subtract the MIN of a group from the MAX of a group!

How do I only use >0 numbers in the group!

Example:

1 $500
2 $300
3 $0 or blank
4 $50

I need $50 - $500 = $450
Not $0 - $500 = $500

Thank you in advance for your help!

 

[Gary''s Student]

=MAX(A1:A6)-MIN(IF(A1:A6>0,A1:A6,""))

this is an array formula that must be entered with CNTRL-SHFT-ENTER rather
than just the ENTER key.

 

[Luke M]

=SMALL(A1:A10,COUNTIF(A1:A10,"<=0")+1)-MAX(A1:A10)