eGift Discount Comparison

Hi guys,

I'm trying to update the eGift Discount Comparison to add Australian Unity and it's a bit unwieldy.
Is there anyway this could be modified to be easier to update?

eg Whirlpool has this for comparing banks
https://docs.google.com/spreadsheets/d/145iM6uuFS9m-Rul65--e…

Perhaps the table could be an include of a spreadsheet like that?