I personally think that being able to add an insta later during an auction is unfair to people who are bidding on a long auction that aren't able to look at an auction because of work, sleep ect. If there was a rule saying that an insta has to be added at the beginning of an auction it would put everyone bidding in a fair race. It's unfair when someone adds an insta 2 days into an auction and someone pays the insta within a minute of it being added without any of the other bidders even knowing what the insta even is