The $100 pretty much covers the shipping and what ever else is needed to get this over the the US.
I understand that.
As far as the marketing terms used in China vs the US.
they are after all marketing terms.
You can use any "pro" self powered speakers for PC use, no?
You could in theory do the same the other way around, but speakers marketed here in the US for PC use, do not have XLR or 1/4" inputs that the pro market here in the US needs.
Bottom line, do these speakers sound good?
The general consensus is that yes apparently they do. (I haven't heard one myself)
Are they worth the money?
Funny question considering we here would easily spend 2x that much on an amp to feed cans music from an ipod.