Jeff---From what I've seen here and mostly elsewhere, the Perth Lunar Series II has a much bigger following and is way more popular. Go to the
APMEX website
and look at the prices of the different years of the Perth Lunar Series (both I and II). You'll see the way those coins hold value & with luck appreciate.
I wouldn't see this as a $$-making scheme, but I think a lot of players do buy tubes of these things and later flip them on
ebay. Just a personal feeling, but...
I think that's more of an activity thing than it is a generator of significant income. On top of that--the fees, hassles, bad dogs who'll complain they never got
the coin you sent them and all the rest of that misery--it all looks to me like more grief than I want in my life. But--traevin is right that the LCS will treat these
as generic silver and likely offer you $1 under spot and you'd do better with it on
ebay.
Bottom line, though---from what I've seen, Perth Lunar Series II coins aren't a loser in today's market.