There might be a craft space somewhere in your town - they're becoming more common. Someone there would likely do it for you for the fun of it!

Honestly. Its much more time consuming to change one item professionally.

Then to make 1000s in a factory setting.

15 is less then 1/2 hour when 6ou take all th3 other costs of running a small business into account.

As another said. A 20quid shirt 8s perfect for learning to play yourself.

Don't do cloths myself. (Little interest.) I make cushions and bedding etc for my little boat.

But you can hand sew such things. Will take a good while. Or find a friend with a machine who is willing to let you learn. You never know you may find a new hobby.

If you live near South oxon. Pm me I may be willing to let you play with mine when I get back home.

Once you learn the basics of using a machine. Plenty of good books d youtube vids on clothing techniques. Plus other stuff. Their are 2 great subs on reddit. Hopefully they will federated soon. I should ask the mods if anyone is interested. I may be willing to run sewingforbeginers here.

I hate to say it, but first world problems. It costs a fraction of what it should cost to produce the item of clothing. Or just capitalism.