https://www.vice.com/en_us/article/kz48dz/inside-the-black-market-for-bots-that-buy-designer-clothes-before-they-sell-out

The hacker finalphoenix had a problem. Whenever she would go online to buy limited edition designer clothes, they would sell out before she had time to buy them.

"I was very frustrated, because whenever I'd try to buy something that was relatively cool on Instagram, it was always sold out," she told Motherboard at the recent annual hacking conference Def Con.