probabaly just standard TRD gear... same across all models?Those wheels look to be the same style of other trd wheels. Not sure of the size, but they should look similar to these.
Google Image Result for http://i43.photobucket.com/albums/e392/97GSX/Xg_800.jpg
Of course there will be more. Floor mats, rear bumper appliques, body side moldings, bug shields, etc. are all accessories. And there is always a need for more. Scion has always been about individuality and how can you be an individual without picking and choosing through a whole bunch of accessories.
It is hard to tell how much they would cost. Google has a conversion site that might help switch euros to dollars, but then you still gotta figure international shipping. As far as availability, I would think most of those items will be available stateside. Or at the very least find someone that might ship it to you from overseas.Those are on the Japanese site though. Will we be able to get them in NA? It's also hard to tell what they would cost over here.