"Funds are easy to get"? Seriously?
What are we going to do, rob the local Yakuza again? How sustainable do you think that is? Maybe they restocked their cash after the first robbery, but I kinda doubt it (given that they had absolutely no clue who stole it the first time, or how). But after it happens a second time a couple of weeks later? Yeah, no, they're not gonna keep anything but bare essentials there.
Robbing ATMs? That's not something we can abuse--if we do it too much/often, it'll cause problems even with the masquerade in place.
Robbing banks? Banks don't carry that much money, specifically to avoid losing lots of money to a bank robbery.
Stealing money electronically from big corporations is much more feasible, so long as we don't steal too much at a time or too much from the same corporations. Of course, we'd need super hacking powers for that, and the only one we know of with such powers is very mercenary. We could do a teleportation service, but that would require Sakura, and she fucking hates us for some unknown reason. Healing services are probably the best substitute we can get in the short term, except that we don't have any healers on our team (the closest we've got is Yuma).
In this update, Sabrina specifically noted that she was starting to run low on cash.