jimasek wrote

Do you have modem/router from your ISP? I think that better solution for you will be modem from ISP and your own WAN router.

I usually try to buy all electronics from the official seller; in this manner, I get the best deal ( no one is going to make a better offer than the authorized seller). For example, last time I bought  AirDots and I was looking specifically for Xiaomi's official store. Of course, not all producers sell directly on eBay, but you can at least try! Also, make sure that the shipping is free of charge and check the delivery company. I mainly search products that are being shipped with speedpak tracking number. I trust this courier, more or less.