Ahh.. good. Another brand/source for this kind of stuff. These ones look a little less turn-key than some of the others, but in the same ballpark for price.
The Arduino is all open hardware/open source, so of course it'll be a little rough around the edges
That's not rough, but, rather, more flexible!
Originally Posted By: BAKup
Also since you're looking at just a USB->Serial with some GPIO pins, take a look at this http://www.gridconnect.com/xportdirect.html It is a Ethernet to Serial interface also with some GPIO pins.
Mmm.. only two GPIO pins, and a surprising lack of information about the product -- not even a pin-out description. How not to sell something on the web.