Welcome to the eBay selling community. 🙂
With my 8 years of selling on eBay, I would tell you the safest method to send electronic items is to pack them very well. No courier company handles the item carefully so its up to the shipper to pack them very well. I would recommend you to visit some wholesale market in your city and purchase packaging materials like Cell Tapes, Bubble wrap plastic and foam packing peanuts. You can use DTDC couriers, they are fast and reliable and much cheaper than First Flight, Aramex, Blue Dart etc.
Wishing you a nice experience on eBay.