We're trying to sell a few items that authors only wanted admins to have/use (I guess that happens, lol)
But 1 minute minimum time on the permission leaves the command open for abuse when buying.
If we gave them the perm for like 2/3 seconds they wouldn't have time to leave the shop and start entering in commands willy nilly.
We know its not perfect still, but we're super low pop. 
We tried oxide grant <sell item> then revoke but it seems to execute everything so quickly that it never works to actually give the admin only item so was looking into a 1/2 second delay with something like this