I am at a very happy place right now with expenses.
These are all per month:
For me ~
Coaching: $140ish (half hour lesson a week, sometimes more, sometimes less)
Class (if I'm taking one, it's just a 30 minute class once a week): $65
Sharpening ($12 every 3 months or so): $4
No cost for ice time for me currently, it's part of my compensation for teaching LTS
Prior to that I was spending probably $100-120 a month for ice (mostly adult and public sessions).
Gas to get to/from rink (76 mile round trip, I go 4X a week on average, and this is basically a tank of gas a week just to skate, so I have to count it) can run $140-175 for the month depending on gas prices
Assorted things like drinks, tissues, replacing lost gloves constantly, etc, probably another $20-30
For my DD (7 and in basic 4) ~
Class: $65
Ice time: $20-40 depending on how often she wants to skate and how often I remember to pay (not intentionally, but I get busy and forget to check her in)
Sharpening ($12 every 3 months): $4
I think skating for my DD at her level is cheap.. she did have a few 15 minute private lessons over the summer to help her through B3 because she listens to anyone else better than me, but I'm not sure when she'd make the move to regular coaching. If/when she did she wouldn't do more than 15 minutes at a time because she just doesn't have the focus at 7 to do more. At the rate she's progressing (slowly) it will be a while before I really have to worry about that