What does upgrading seller minion even do

[Rm92x]

I've upgraded all of my seller minions again after the problem about sellers were fixed there is no difference in them from the begging level to max -_- plus I have 8 stacks of iron at a time going into a chest but still only fills half way in 15 secs it used to fill full :( is anyone else having this problem

 

[anxi]

I’m sorry, I have no idea either! It could just be the durability level or something.

 

[MCBYT]

I may be wrong about this, but I think I heard that it increases their range. I don't use seller minions on any mode I play, though, so I'd suggest asking a more experienced player in-game.

 

[Capporo]

Seller minions are getting fixed their are bugs which have been removed that may have caused it to act differently than it supposed to.