1. Process
What you never want to buy is shoddy things made with cheap materials; such a product is destined to be a waste of money, no matter how cheap it is compared to the real product. The replica goods you should be looking for is obviously carefully crafted with materials similar to those used by the actual brand.
2. Details
One thing that distinguishes great brands from those that are lagging behind is the attention to the details of the products they produce. The best replica producers don't skimp on these details, they pay as close as possible to every centimeter of the product they are trying to imitate. Before you proceed with the purchase, take a closer look at the replicas to see how well they match the most important details.

3. Guarantee
Inferior replica products are unlikely to receive any guarantee from the manufacturer. After all, this will be a failed proposal, because most people will return the goods quickly. If you can get some kind of guarantee from the replica manufacturer, this is a good sign that they are confident that the products they sell to you will meet your specifications.