When things are well made, and well thought out, they will sell. My point was that props aren't any easier of a sell then charactets or clothing in poserdom. Medium quality props won't sell better or bring you more money then medium quality charactets or medium quality clothing.

Sure, there are other 3d markets, but MistyLara has asked about Poser related content. Different 3d markets have different dynamics. That falls under researching your target market.

Some of the prop makers you listed here, I talk to on regular basis, and a few othes, not listed here, and I've done props myself and have first hand sales numbers too. Lot of content makers talk to each other, hang out, or on occasion collaborate. By all means, I would encourage that you verify the veracity of what I'm saying. This is not about who is right on the forums, I'm just offering some of what I leraned over the years of being a content maker. If you don't want the knowledge, or prefer to make your own mistakes, go for it. It only makes it easier for me (and other vendors) to stay competetive.

I have serious reservations about armchair quarterbacking someone's interest in making a living out of this, because there is a significant amount of misconceptions in forums, and I hate seeing people learning the hard way, and suffering losses.

I don't think anyone is disagreeing with what you've said here.   

I'm the one disagreeing with specific statements (without elaboration) that props make it easier to make it in the business.

What helps one 'make it' is understanding the market segment where they want to sell. It's not always props.  What bothers me is that I hear more and more about props being an easier sell, and I know that is not the case. There is a number of different paths that can work well. Some people may have preference for making props, some people have preference for other things. 
I just don't like throwing newbies (to the business side of it) to the wolves.

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Renderosity Store  Personal nick: Conniekat8
Hi, my name is "No, Bad Kitteh, NOO", what's yours?