These aren't my prices, I'm qouting directly from the links they have given me, http://www.aliexpress.com/store/804306/210586708/Nissan-Skyline-R33-GTS-GTR_1.html
Feel free to look there if you are uncomfortable with the prices you are giving. I'd be interested to see your price list actually because I don't know why there would be a massive price difference, unless of course your prices are wholesale/commercial quantity.