We know she's spent about $1000 on shoes alone, because she has 5(!) pairs of shoes she's purchased for strongman. I'm being conservative on the cost here.
The belt ($170) and corset thing ($6

comes to $238
ShebNation nutrition services are $175/mo and she's been doing it for 3 months so far - $425
Coaches are expensive, a mid-tier strongman coach is about $100/session in Austin. We know she was doing 3 workouts a week with him, so that is $1200/mo for 6 months - $7200
Remote coaching is cheaper, but Inez will be more expensive due to having a pro card and title. I'm guessing $400/mo - $1200
She tends to link to leggings in the $100 range with a few cheap options, and of course she bought bras and shirts. So a conservative estimate is $1000.
The meal service was $150/wk and she did it for two months - $1200
Her protein junk haul was around $150 as well, and let's guess she replenished it every 3 weeks since she started. Once again, undershooting here. I'm going with 6 months of eating it because she seems to have stopped. - $1200
Having 2 gym memberships, estimating $60/mo for each and then another membership starting last month....over 9 months, that is another $1200.
We know Anna gets premium donuts, so those are around $20/dozen in Austin. Her weekly reward is $720.
I'll throw in $500 for sign up fees, and other miscellaneous.
$16,603. And I think that's the low end.
For reference, over 5 years of powerlifting, I added up my costs of gym, shoes, special gear, leggings. It came to around $3,000, the biggest expense being a gym membership but I tend to go to the cheapest place with a barbell. I have fancy expensive squat shoes, but I got my belt and NoBulls secondhand. My leggings and t-shirts are from Amazon. I have incremental plates that were a little pricey, but cheap wrist straps. I've never bought a meal planning service, meal prepped food, training, or protein slop outside of protein powders. I guess we could throw in $1500 for protein powder and creatine.