Hi babydoll85,
Choose those that provide safe payment option, and the best payment method to use would be a credit card, as this always give you the chance file for a chargeback should anything go wrong. :)
Do a lot of research, look for signs that can help you discern if a supplier is worthy or not. Here are guides you can use -
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There are good sellers in DH Gate, based on these feedback posts from SaleHoo members -
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And remember that you should never buy anything branded from any China based suppliers.
Hope this helps.