When buying reloading components, how much/large of quantity do you buy?

For example, do you buy 8lbs of Varget instead of 1lb containers, 210M primers by the 500 or 1,000 instead of 100s?

Also how much brass to buy at a time? Components are a little scarce right now, so I bought 200 round of Laupa 308win brass. How long or should ask how many times can the brass be reloaded?

I found a source for some Varget but only in 1lb quantities.

My reloading components so far for the 308win:

200 Luapa brass

100 150gr Nosler partitions
100 150gr Hornady Interlock sp
100 150gr Hornady Interlock roundnose

2lbs Varget

1,000 Federal Gold medal match 210M primers.

Leo