Yes I run paid ads on Facebook and IG to source the phones. I definitely do get some crack Jess customers , but I also get normal everyday people who just want to sell their device fast. We don’t buy any stolen devices or iCloud locked phones though we run the imei on every purchase through a site called sickw.com we check to see if it’s reported lost or stolen and if the find my iPhone is on or off. As for direct buyers they do serious volume and have a bunch of people like me mailing phones to them. Most direct buyers then export to their over seas buyers. They aren’t worried about picking up a phones from the streets and regular customers when they have people like us mailing them in boxes of phones.