I was very tempted to title this 'Saggitarius is an idiot'. So I'll be able to start his quests no problem, but if my sp dips below the preferred amount to start his quest, he won't take my items.

no problem right, just go to my vault and withdraw about 200k sp? well here's the issue- even when I've had a million sp on me he still won't let me finish his stupid quests, saying i don't have enough, and i just have to wait for the time to run out, effectively wasting over a 100k sp. Is there anyway to fix this?

He now asks you to have 1.5 million sP on hand. It should work fine once you get back above the threshold. c:

omfg that's ridiculous. why am I able to start it with like 250k then? thank you for the info, i'm starting to wonder if saggy is even worth the trouble.

You don't need 1.5M on hand, you need 1.5M on your account, including in your shop tills, vault, or unaccepted trade offers