No, it's not currently implemented. Trying to understand exactly how you will use it so it can be implemented correctly without follow-up changes.

With the talking vendor will spawn a mini via console-command. to a location and lock it to the player/team...
the talking vendor uses console-command to make it more flexable.

Merged post

Similar to bandit camp lock to player tell mounted.

How do you make sure the person setting it up is able to provide accurate coordinates? Do they set up the vendor with absolute coordinates, or are the provided coordinates expected to be relative to wherever the vendor is placed?

I'm sure others have probably thought about this more, but I imagine the way for a plugin to correctly provide console command feedback would be to have the console command accept another command that it should run upon completion.

spawnmini.give player x y z "talkingvendors.complete 1234"

Then SpawnMini will call either talkingvendors.complete 1234 success or talkingvendors.complete 1234 failed where 1234 would be the transaction id that the talking vendors plugin would keep track of. The vendor plugin would then charge the player on success, or print a message on failure. I'm not suggesting we do this now, but ideally something like this would become standardized for shop plugins and spawn plugins, since failure should be an expected case.

absolute coordinates