Yes. It will take a lot of reading so you will feel comfortable buying a Rep. It is not Amazon. The Navitimer World by BP Factory is the best Navi. Any Breilting made by GF Factory is very good. GF makes the best Breitling's in my opinion. You can always find cheaper watches made by 2nd and 3rd tier factories but there is a reason they are about $100 cheaper.
Here is a link to your homework assignment. The first 2 posts on this page will help you understand what is involved buying an illegal counterfeit watch.