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They have about 8000 extra gold products available to approved resellers that aren't available to regular customers of their online store. The process is free and not too difficult, and they dropship. There are no MOQ. Once you're approved, you can access the special part of their site with the extra catalogues and pricing.
They do not do gold plated brass/copper, only gold plated silver. They also have a range of solid gold as well. Pricing for plain gold and silver products depends on the weight of the item - the weight is listed in the product catalogue, and you're given the cost per gram, and you work it out that way.
There is also an extra 13% discount added on items for approved resellers.
The other interesting thing about them is that when you're an approved reseller they have freebies and heavily discounted jewellery (eg say CZ earrings/pendants, for instance) that they make available one per order so that you can give them as customer rewards and incentives to keep your customers coming back.
You can also customise jewellery to a certain extent so that you are not selling the exact same thing as someone else. I do find the design choices for this option limited.
On the down side - their ring settings are extremely ugly!!!!