I have a spreadsheet with 4 columns of different grade pricing.  I have it working perfect with one column using this formula (=AGGREGATE(9,2,C11:C3505) because i was getting errors due to the pricelist having blank spacing.  But i want to be able to choose what grade i want and have it lookup the price from the corresponding grade that i input on a cell (cell J9).  How can i make this work?