Every website/forum has problems with scammers targeting WTB ads. Some sites make read a statement about scammers before they will let you post a WTB ad.
If you are posting a WTB (Wanted to Buy), you will likely be contacted by a scammer or two. Normally they say something like...
"I know a guy that might have one in this forum, he goes by @Username I haven't seen him on here for couple of days...
Folks are already paying more than 15% above retail for units from S. Korea and elsewhere. And then they don't get a warranty. Why not just pay a bribe up front and be able to purchase Care Refresh and receive warranty service?