I have recently wanted to post a bounty for 50 points however 50 points was not an option that appeared when I clicked "start a bounty". This forced me to post the bounty of 100 points.
I have read the FAQ about the bounties and there didn't seem to be anything about this behavior in it. I wonder if there are any additional rules to posting a bounty that might force you to post a higher bounty. I noticed that there are already a lot (30) of bounty questions asked on this site and possibly it's a mechanism from keeping the bounty number lower?
Could someone explain to me exactly why I couldn't post a lower bounty of 50 on my question? Maybe I'm just silly and missed something in FAQ.