Broken Planter! How Much Money Can we Save?

Well spring is right around the corner and before you know it we will be back in the field planting the 2020 corn crop. I need to figure out what parts I need to order to fix the John Deere 7000 planter to make it field worthy. There is a parts sale going on so I want to get the parts figured out and order them before the sale ends. Will I save any money buying them online instead of buying them from my local John Deere dealership?