In the very past i never paid for any kind of software (and who on Earth pays for M$ Office or Nero Burning Rom?). Since 2010 that has changed dramatically. I really enjoy paying for tools (mostly download tools!) which i often use or have been appreciating. I even pay for freeware lol! (paypal donations).
I hprefer the finished retail products. That's the way it goes: Coders do the work; i pay for their product; and i use the user-friendly software without having to bother about the code implementation.
Whatever rtmpdump can download, i can download it too with the help of my purchased Windows tools (
Replay Media Catcher,
GetFLV, etc. etc.).