I agree that selling items online can be a bit of a faff but the ebay app makes it easier these days to put photos on, set a postage rate, descriptions, etc. I’ve been buying and selling on eBay for quite a while now and it can be hit and miss with the selling and it does take a bit of time, buying the packaging, taking it to the post office (which I use to send everything I sell) but it can be a way to make a bit of spare cash.
I sell bits on eBay for myself and for a charity I support. I’ve been selling bits on this forum for my charity but this is a bit hit and miss as well.
If the OP pms me maybe I might be able to help and sell her clothes for her (and me) 😀