Problem with Index and Match

Morning, Gurus. I've used this formula (garnered from the geniuses on this site) to vlookup data from one sheet to another if 2 criteria were met, and it worked in that instance. Now I am trying to edit the formula to work in a different workbook, with different columns, and seem to be having trouble with the edits.

I have two worksheets with the same column headings, but the data may be different. I am trying to compare the price in one sheet, (Key), with the price in the sheet where I am entering the formula, (CanKey). I have attached a sample of the workbook, after removing sensitive data. Here is the formula I am entering in column J2 of my CanKey worksheet to return the cost from the Key worksheet (Column I) if the vendor number (Column G) and the product number (Column A) match:

=INDEX(Key!$I$1:$I$10, MATCH(A2 & G2, INDEX(Key!$A$1:$A$10 & Key!$G$1:$G$10, 0), 0))

Not sure what I am doing wrong. Any help will be greatly appreciated.

Have a good one.