SELL them, sorry! Part of me wanted to buy them as they are such a bargain, even though I don't have anyone to wear them, but also I was trying to imagine how the fabric could be bought, cut, sewn etc for so little!
There was a BBC3 series a couple of years ago showing the cheap end of the UK clothing market. Called something like Blood sweat & Tshirts.
It was focussed on a gang of older teens and self confessed fashion victims who worked in a range of fashion jobs from nice factory right through to cotton field. Some of the sweatshop bits were a real eye opener, workers living in the one room factory - peicework and not paid if not up to standard, for pennies per item. I don't think they did show any child workerd, but I wouldn't be surprised tbh.
I do wonder why when people do choose fairtrade items in terms of coffee/chocolate etc that so few fairtrade options are available in clothing. school staples seem a really obvious one, especially when I think how political we used to get about things like animal rights etc as teens, I suppose it'll take longer to filter to younger ones. Then again, if 2 for £4 dresses exist, many will buy them esp while money is tight.