100 is very cheap price to see a literal magical girl, or to be helped by magical girl.
Most people who lives in the world where magical girls exist, rarely see them physically in real life, due to the nature of their appearance, there must be "hard to survive" scenarios.
Magical girl, if she is the righteus one, must've good reason to fiddle with fate.
Some Magical Power tend to have those kind of restrictions. Sometimes a price need to be paid to prevent the bigger cost, they can't do it for Free.
If she's Neutral or Evil, which barely make any difference at this point, they can just decide to take my money for fun, and asking me is just a either necessity or kindness courtesy.
Regardless, it's a unstoppable that I'mgoing to lsoe my money either way.
I will do it once, just once. Once or twice is the maximum.
I will try to stop it and try to get some help once I see some repeated pattern.
I can do this because for the fact that I know she is a "magical girl who is definitely not a scammer". Because I know the fact she is NOT scamming me, due to the absolute nature of the question, I can trust it.
If You dont trust the fact of "magical girl who is definitely not a scammer", might as well not trust the whole question in the first place.
It's like being asked what was 2 apple + 3 apple, and answering "2 apple because i don't believe the other 3 exist".
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Eveb If the magical girl is scamming me, If she is a righteous one, If I cannot get help, I can pretend that I'm giving help to a "magical girl", giving help to a Hero, like I'm helping an injured firefighter that got incident and need $100 i mean it is not a big deal and thus one can earn them quickly through Remote Jobs
Remote Jobs.
If she is scamming me, and she is an Neutral or Evil magical girl, that means I'm just simply being robbed at gunpoint. Giving her $100 would be better.
Neutral or Evil magical girl tend to be nasty in their way of work, I will definitey lose the $1000 in the most uncontrolled damaging way. She could just stole it with her power. Better lose $100 in the way I can control.
If she is not a magical girl and she is scamming me, if she is not dangerous, I will ask for help and not give her.
If she is not a magical girl and she is scamming me, she has weapon or not weapon, If she is dangerous, I will just give the money.
If she is not a magical girl and she is scamming me, she has weapon or not, but she is not dangerous, I will not give $100 and try to get help.
That's it. Assuming I'm whoever currently I Am, with all my weakness from previous world, but the world simply just more dangerous with supranatural sheanigan and more unnanounced mysterious death.
It's already a blessing to be transported to a world where I can still enjoy the modern technology and society.