"da Vinci's Vault" was the title of episode 37 of the "James Bond Jr" animated TV series, according to several sites.
The merchandising "da Vinci's Vault" looks like one of those outfits that advertises all night on "paid infomercial" TV. It appears to be a single company, but anyone can "merchandise" their stuff, either as a "line" at their own "retail establishement," or they can set up a website specifically for the da Vinci stuff. You order from the "self-employed dealer/agent" who forwards the order to da Vinci's, and da Vinci's ships the stuff direct to you.
No info on how reputable these sources are. I'd suspect the warehouse is reliable enough, but they may not be too choosey about who sells their stuff, and you have to deal with the "self-employed agent."