Just wanted to add my opinion, for what it's worth. I don't think it's unethical to want to sell something you've worked hard on and believe would be of value to people, whether the information is public or not. If I were in a position to need that information, I would gladly pay someone for a nice crisp package rather than spending the hours to do it myself. If I look at the hours I spend doing any sort of work as billable hours - say I charge $20 an hour for this sort of work - and it takes 10 hours to compile the exact same information, that's $200 that someone theoretically owes me. Which means if Postunder's catalog is anything less than that, it's worth it. And if it sells for, say, a quarter of that, or $50, then I know I've got a huge bargain and have saved lots of time in the process. My two cents.
Someone owes me $2.02 for writing this.