I spend about 7.99 AUD on Episode per month.
I used to spend 14.99 AUD per month on unlimited passes but since they’ve taken that deal away, I only spend them on the cheaper ticket deals if I’m really invested in a story and want more.
Most of the time I have ads to cut down wait time so I don’t have to spend money for more passes.
I have over 1k gems but I only spend my gems very sparingly, typically only on stories I really, really enjoy (community stories, not Originals) and even then, I will normally support them once or twice or pay for early release once or twice. 
But when it comes to spending money on assets and whatnot for my own stories… well that’s totally different and it’s gone beyond 3k AUD. 
Most of that has gone to 3D assets and art commissions.