Not as an amazing deal as the Kogan pricing error of 2012 when they were only $5 and I personally wouldn't use these to drink from… but at $6.50 each they'd make great gifts or Pen Holders/Desk Organisers and I know of a few friends who are still keen to buy one as cheaply as possible. I'm still using my Kogan one as a Pen Holder on my desk and it looks/works great and don't consider it too top-heavy for this purpose as others seem to.
As per all Meritline purchases though just be prepared to wait a good 2-3 weeks for the items to arrive but they're usually pretty good and all my Meritline purchases have reached me so just be patient.
I remember buying these as gifts from eBay when sort of thing first arrived…about $40 each…this is a good price as they can't look any worse than those early ones