If they’re reasonably priced, I don’t see a problem. Especially to get rid of older merch, or just swag. But turning it into a business for profit is disgusting and screams ripping off the buyer.

I haven’t seen or looked into them in a long time, but someone had a shirt, stickers, merch, lanyards, etc, for like $15. I think it was a YouTuber or something, not a subscription bullshit model. Seemed reasonable if it was something you really liked and wanted to support.