How do they know if you’re a decorator or not ?
If they are bringing them a LOT of clients and orders.
Now to answer the op questions, you don't get 'invited' to this type of website, it's a 2 ways street. Bring them a lot a customer, and then it will result of discount or a 'secret buying' strategy to make more profit/money ..
It think you real question should be, does anyone have any lead to get discount on furniture...
Good luck.