I was perusing the SL forums for discussions weighing the pros and cons of mesh imports and found this thread by Flea Yatsenko:
This does indeed appear to be a tricky subject. Is this something that could have been predicted by Linden Lab? Did they predict it? If so, did they care? I don't pretend to know the answer to those questions. The first person to reply to the above-quoted post suggested that dishonest sellers probably won't last very long because they will develop a nasty reputation and ultimately go under. While this is probably true, what of those initial victims who bought mesh-based items having been told something that wasn't true? They'll have wasted money on something that costs more than advertised, and the damage will have been done. And then there are honest sellers who may not fully understand what it is they're selling or how to advertise it properly so that buyers understand what they're investing their money in. Do they get caught up in that category, even though it may not really be their fault?
Like I said in my last entry, mesh will probably be here to stay. After reading some more on the subject, I'm reaching the conclusion that it will be slow to catch on, and then settle into a niche similar to sculpties: created and imported by people who have the talent to make them (or at least upload them from other sources, a feat that could prove difficult to trace), but for everyone else, a pretty but ultimately expensive toy that may not be worth the bother.
Just my two cents, for what they're worth.