can some control be put in place so that persons don't make ridiculous bids?
E.g an item starting bid price is 100usd,
the reserve price is 150usd
and the bid step is 5usd
I don't want persons to be making abnormal bids of let's say 1,000,000usd.
This I believe will put other bidders at a disadvantage.

can a bid cap option be put in place to prevent this from happening?
eg. the current bid is 100usd and the minimum bid is 105usd.
We can make the next bid be a value that is between the minimum bid (105) + a value set by the bid owner( let's say 25usd)
so the next bidder cannot surpass 130usd on their next bid.