Title says it all. Do you think it's possible that LE has fake/UC accounts and makes fake orders to determine different stealth methods? Could also be doing it to check for other things, such as the type of return address labels being used, packaging, etc. I'm sure I'm not the first person to think of this, but I've never seen it mentioned anywhere.
Well duh yes. They also do controlled buys to build evidence against the marketplace, mountains of drugs look great before a jury. Return addresses are always fake, but they do get the zip code from where the package was sent. Honestly, if your package gets tagged by dogs, or someone snitching on you, then they'll find the drugs. No matter how good the stealth is.