There are some interesting questions having outdated answers. So, instead of making a duplicate I usually start a bounty, costing me at least 50 points from the reputation each time. Of course, the idea behind that is that people just have to think before doing this. Therefore, next bounty worth increases by 50, right? Although I don't know if the questioner and all answerers are getting notified in such case of a bounty. This would clearly disturbing if every minute someone could issue a bounty.
However, I feel a bit penalized in searching my question and then have to pay to get not outdated answers without gaining anything back, which I assume (correct me if I am wrong).
So how do I start a bounty for outdated questions when having low rep.?