Opinion on a Castellano Fango on eBay

[AspireApex]

Hi guys, I'm new to the forum
I was looking through eBay and to my surprise, I found a (from what I'm told rare) 16.5 Castellano Fango.

http://cgi.ebay.com/ws/eBayISAPI.dll...m=150323838677

What if your opinion about this frame? Does it look alright, what kind of questions should I ask the seller? How much should I be paying for this type of frame? Thanks!

- AspireApex -