I am looking for non-technical advice from a few database administrators. I realize that this is not a technical question. I am asking it here because I need input from DBAs.
I am working on a project that involves conducting a web survey among DBAs who work with UNIX-based systems. The survey will be 12-15 minutes long and can be taken at any convenient time. The survey will be conducted by a reputable market research firm with a 12 year history. All answers will remain anonymous.
I am NOT looking for anyone to take the survey. Rather I am looking for advice on which incentive I should offer. Here are the choices under consideration:
Option #1. Cash-only. Everyone who qualifies and completes the survey is paid $25. You can chose to get the money via PayPal or as an Amazon.com gift certificate.
Option #2. Raffle-only. Everyone who qualifies and completes the survey will be entered in a raffle to win one of several Apple iPad 2 worth about $500. For every 40 completed surveys, we will raffle one iPad. So your odds of winning are roughly 1 in 40.
Option #3. Combination. Everyone who qualifies and completes the survey is paid $15. In addition, everyone will be entered in a raffle to win one of several Apple iPad 2 worth about $500. For every 100 completed surveys, we will raffle one iPad. So your odds of winning the bonus iPad (on top of the $15 everyone receives) are roughly 1 in 100.
Which option, A, B or C, do you think will be most effective at getting DBAs to take our survey? If you think we should offer something different, please feel free to suggest it. I would like to hear from as many DBAs as possible. Thanks for your help. :)