YF,
from what I understand reading the rebate form, it is 50 bux off a maximum of 300, send in original invoice as well as barcodes off the boxes/packaging.. whether it is 300 .01 or more, max is 50 rebate..but it has to be in rcbs product..
I found it easier to get all at once,,since I was close..but that is just me
you can always use shellholders unless you are getting a lee die set, as they come with them, or something to bell case mouths on pistol brass, or a crimp remover..or a brush.. or powder stand..anything rcbs makes..not just big ticket items..