So you guys didn't know huh?
I bought two of the Yusa buggies, would have bought four if the wife wasn't on to me... Jeez for under $100 each including shipping, they will be good bashing buggies to convert to brushless or finish off a few nitro motors that have a couple hours of life left. The'll be a blast, even if the quality isn't top notch, but they should be excellent quality from what I have turned up.
OK so this will probably generate a little heat on me and whatever...the truth hurts.
http://www.rc-monster.com/forum/images/smilies/gasp.gif
So on top of talking to a few international contacts, I did a little research and it turns out there are only a couple oversees manufacturers out there that are building hobby level buggies. In fact 90+% of the buggies all roll out of two factories. I have more than a couple reliable sources that confirm that Yusa was/is the primary manufacturer of the majority of the buggies available. Still trying to find their website and contact info to talk to someone. Those units are then private branded or upgraded per manufacturers spec. Most of them roll out the door simply with a sticker, body, and tires change.

Surprised, it's a small small globalized economy folks.
I talked with two different popular manufactures off the record and both said yes, in fact the Yusa was the same exact unit as their current offering and then proceed to tell me everyone else that was using the same chassis, I was shocked. Wheels, body and electrics, and a machined shock tower here and there may be slightly different though. Now of course there are different "grades" with more or less features, but there is a reason the vast majority of 1/8th scale buggy parts are interchangeable.
The Ebay Yusa doesn't have the CF or machined shock towers, but I would bet that everything else is of agreeable quality. So what is difference in price for the $80 Yusa and some other chassis? Marketing - service, support, sponsorship, branding and all the other stuff adding to operational costs can double to triple the cost of a buggy then of course there is the distributor and retailer markup - ergo an $80 buggy roller chassis become a $399 price point when you finally see it. Everything has a price.
I'll keep you posted with pics when they both arrive.