ebay xml ruby cocoa

So I've been trying to figure out how to take out the ruby xml stuff I've been using for ebay and change it to pure Cocoa/ObjC.
Whats nice about the api I was using is the syntax...
search_response.search_items.item.price etc

I'm trying to duplicate this in cocoa

I think the easiest way may simply be to load the xml into a nested NSDictionary
Then I can use..

search_items = [ search_response valueForKeyPath:@"search_items"]

But I also wondered about looking at soap and wdsl. Its a shame I dont have the leopard dev kit, there might be stuff in there that would be nicer.

Im pretty new to xml, and erm cocoa so its all err new..