I don't spend nearly what I did when I started, but when stores are having sales, I think I have spent about $100 in one transaction which I don't think is much at all compared to how much we spend just when we are out running around with snacks, eating out, and miscellaneous expenses.
When I think about how much I used to spend on paper scrapping supplies, I don't think that I spend much at all on digi. I used to easily spend at least $75 every time I walked in the LSS and usually $150 to $200. And, with digi, I have 7 completed and printed albums (25 to 91 pages each) that look great and don't take up much space. Whereas with my paper scrapping, I have several incomplete albums littering my house.