Maybe.
=SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$D$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column3]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$E$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column4]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$F$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column5]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$G$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column6]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$H$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column7]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$I$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column8]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$J$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column9]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$K$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column10]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$L$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column11]
+SUMPRODUCT(OFFSET('Units Sold by Model & Market'!$A$1,MATCH('Parts Table'!$M$1,'Units Sold by Model & Market'!$A:$A,0),MATCH(C$2,'Units Sold by Model & Market'!$1:$1,0)-1,COUNTA('Parts Table'!$N$1:$AG$1),1)*(TRANSPOSE(Parts[@[Column13]:[Column32]])>0))*Parts[@Column12]
Regards.
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