Hi! I downloaded the free Myibidder because I was overbid a few times by sniper software that placed bids 3-5 milliseconds before the auctions' end times.

Are other sniper prgs able to react to my max Myibidder price placed 5 seconds before the auction's end and outbid me by placing bids 3 milliseconds before auction's end? It seems that all sniper max bids have to be set a few minutes in advance.

What is the best "bid time sec" to set (5 seconds due to network delays or can it be 1 second?)? Is the following a correct understanding?

I set Myibidder max bid at $30, bid time sec at 5 seconds. My only competitor sets his sniper max bid at $25, bid time sec at 3 seconds. I will win because my bid is higher.

The only time that the bid time sec matters is if we set the same myibidder max bid and he set bid time sec at 4 seconds and I set my bid time sec at 5 seconds. Very likely situation.

Thank you.

Myibidder does not react on other snipers. It just places your bid on eBay. If your bid is the highest -- you win.
So you will win using your example because your snipe was higher.
If bids are equal, the earliest bid wins. So it make sense to add a few cents over your maximum to cover it.

I recommend to keep the default 5-6 seconds time for your snipes.