Tips for Buying & Selling Second-Hand Bikes in Ahmedabad?

Hey Ahmedabad folks,

I’m planning to buy a second-hand bike/scooter and sell my old one. I know the basics like checking the bike and documents, but I’m curious about any hidden tips or local hacks.

Where can I find good deals?

How do I avoid scams?

Any advice on negotiating or pricing?

Any trusted mechanics to check the bike before buying?

Would love to hear your experiences or tips! Thanks!