Hello, most bidbots work as a kind of auction.

In which the one who sends the bid mayopr wins 50% of the value of a 100% vote. of weight.

This will depend on the voting value of each robot. there are ones that range from 1 sdb to 50 as is the case of booster.

You can monitor the whole process on the steembotracker official website.

There are robots that have a loss limit in the ROI that is usually around 10% and on the other the gain in the same way between 10 and 15%. You can not win more.

There are ortros robots without limit, in which you could have an X10 of your investment or lose everything if there is an excess of bids u and surpass the value of the vote.

Lately it happened that the auction is in a perfect way and at the last minute a user arrived and deposited a bid superior to the value of the vote and this was constantly repeated so he came to believe that it was not a fair game,