You realise pots are like 500g a piece right? 40 wipes on a prog night is relatively normal, so even if you aren't hitting the point where you use your 2nd pot, that's 40 pots.
500g per pot x40, that's 20k for a single raids night. 40k if you're progging on a boss that see's both pot uses somewhat early in the fight.
If I was to buy the mats now, for 20 pots i'm looking at 160 sirens, going about 4k on my server, and then riverbudx200 which is anywhere between 5k and 10k.
So lets assume bare minimum, that's 9k, that'll get maybe 10 procs on average. Just spent 9k on 30 pots, still need 10 more for a single night of single pot wipes.