Ask Gearbest to refund you the full amount including shipping costs. If they refuse, file a PayPal dispute. I know it’s only a small amount, but in my opinion the seller is responsible for properly delivering the product to you. If the provider they outsourced their delivery serive to failed to deliver the package to your address, that’s the seller’s problem, not yours, and the seller should wear the cost. They can then take recovering their delivery costs up with the delivery provider, not you.