Billmaster doesn't have sands of time?

[NintenPyjak64]

So it'll take like 4 months for 1 sands? That's a bit extreme.

I said Minimum not Maximum. If you play it as casually as it gets then yes, 4 months. But if you actively kill elite marks in the wild (please note the higher the rank the more allied seals you earn) then you could probably have all you need by the end of a day or 2