Ebay does a good job in most ways especially with security and safety. My main complaint now is not listing reserve prices. I bid high enough to exceed reserve but underbidder was too low for increment to beat reserve.
Communications with seller is impossible for someone unregistered. A 99.9% seller insists that an expensive Gruen is mismarked 14K and is 18k.
Item 310194622086. I know for a fact it was available in 14K. I had one. This false claim could be an advantage for justifying an unwarranted return, but maybe someone could correct it.