So, let's see. They're advertised on a site that lists real guns for sale. The site that the advertiser initially copied the photos from specializes in fake guns. Taking those factors into account along with the seller's alleged location (Savannah, GA), the status of the Glock 18 (i.e. don't even think about it if you're a civilian), and the asking price, I think this one has "SCAM" written all over it. With a blink tag.
Latinum malum ex rectum extractum.
A wrong note played timidly is a mistake. A wrong note played boldly is an interpretation.