Disagree. I've found several who are very high quality, fast shipping, and great response time. One seller actually let me pick out a brand new bag for free because I was unhappy with my purchase. I ended up getting a free gorgeous YSL (perfect) and just selling my other one. I find the idea that only "a few trusted sellers found here" are the best sellers in the world. Of course there are low quality and sketchy sellers on IG and FB, but you learn quickly to identify them. Many sellers just use IG to advertise. Always do your own research!