I know what you're thinking. Sustainable fashion is expensive. That's for people who shop at Reformation and don't look at price tags.
I thought the same thing. Then I actually tried. For six months, I gave myself $50 a month for clothes. Not a penny more. And I only bought secondhand or from brands that actually try to be decent.
Here's my real spreadsheet. Every dollar. Every mistake.
The rules I made for myself
No new fast fashion. That meant no Shein, no Zara, no H&M new stuff. I could buy them secondhand though.
Thrift stores, Poshmark, eBay, Depop all count. Sales at sustainable brands count too, but those rarely fit the budget.
I kept a note on my phone. Every time I bought something, I wrote it down right away. If I didn't have the cash that month, I waited.
Month 1 – January ($48 spent)
Thrift store wool sweater – $6
It's itchy. I wore it anyway with a long sleeve underneath.
Thrift store jeans (Levi's) – $12
These fit perfect. Still have them. Best $12 I spent all year.
Poshmark Everlane t-shirt – $9
Used. Slightly faded. That's fine by me.
eBay Patagonia fleece – $21
This was my big spend. The zipper sticks a little. I didn't care. A new one costs $150.
Total: $48
Leftover: $2. I rolled it to next month.
Month 2 – February ($52 spent)
Thrift store cotton button-up – $5
White. A little yellow under the arms. Soaked it in baking soda. Good enough.
Depop Uniqlo leggings pants – $15
Someone wore these twice. Looked brand new. Retail is $40.
Poshmark Merino wool base layer – $20
Smartwool brand. Had a small hole near the thumb. I fixed it with my sewing kit. Saved maybe $60 off new price.
Thrift store belt – $3
Old leather. Falling apart a little. Still holds my pants up.
Total: $52 ($2 over from last month, so $50 out of pocket)
Month 3 – March ($44 spent)

Thrift store denim jacket – $10
Levi's again. A little tight in the shoulders. Still works unbuttoned.
Depop wool vest – $18
This was dumb. I don't wear vests. But it was cheap and warm. It sits in my closet.
eBay running shorts – $9
Nike. Used. Smelled weird at first. Vinegar soak fixed it.
Thrift store tote bag – $2
Canvas. Holds groceries. Fine.
Thrift store t-shirt (3 for $5) – $5
Old Navy. Men's section. Comfy.
Total: $44
Leftover: $6.
Can you do this too?
Yes. But you need patience. Some months I found nothing good. Other months I found everything.
The spreadsheet helped. Seeing the numbers made me think twice before buying dumb stuff.
I'm not perfect. I still want new things sometimes. But $50 a month works for me. Maybe it works for you too.
Start with one month. See what happens.