Yo I wish someone did custom clothing for sats.
I use AliExpress app for that, $6 cotton t-shirts that are the same quality as locally sold $40 tshits but made in China instead of Bangladesh.
Huge range of customiseable tracksuits and hoodies anything a sports team wears with their team logo on it.
The quality veries, and most sellers want you to pay first then send them the pictures and wait.
Mostly transfers, but some of the t-shirts sellers do screen prints and that's more like $15 each unless you're buying in bulk.
You can also get custom transfers in bulk on there for next to nothing if you already have the clothing to put them on.