We have sent you an email via support, however pasting our reply below for other members' reference as well-
We have spent several hours looking for a supplier for the brands you are interested in, but unfortunately we were unable to locate any that are suitable. It could be that their products are sold through authorized distributors only. We suggest that you contact the manufacturers directly and ask for their authorized distributors or inquire how you could become an authorized distributor yourself.
Here are other phone case dropshippers that might interest you though:
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To find specific products on their sites, I recommend using the search function or browse through their categories.
The prices listed on the suppliers' websites are mostly in retail so contact them directly for their dropshipping price.
As you are probably well aware of, dropshipping is not the same as wholesale in terms of pricing and the profit margin you can have. Rather, it allows you to test a market without too much risk, and expand your product range without having to invest heavily in stock.