I want to put a little PSA here:
Any seller can steal photos of an authentic bag from another seller past or present, and show great detail. Image search will help you here but it won't cover all platforms, for instance it cannot search Instagram.
Any seller can buy Instagram followers and/or create dummy accounts/use bots to post positive comments and feedback.
Any seller can buy or sell a bunch of cheap items to increase their eBay, etc. feedback, and similarly can use dummy accounts to post positive feedback. They can even create false transactions between two accounts to show high-value sales, so you can see a bunch of, say, Birkins sold with positive feedback.
Any seller can be super responsive, warm, and friendly by DM, text, even phone.
Please don't fall for any of this and do something where you as a buyer are not protected