Is 340 $ a good deal on a new LG g4?

Yeah, thats a good deal. Swappa has them going for about $100 more. Be careful on craigslist. Make sure it's not stolen or there's issues with it. Test thoroughly before handing money over.
 
Only way I'd buy from CL is to meet the seller at a corporate store (AT&T, T-Mobile, whatever). There you can work with a rep to put your SIM into it, make sure it activates, LTE works, no issues, etc. Then pay the cash :)

I would also make sure to get a Bill of Sale from the seller with the IMEI stated. It doesn't really guarantee anything but later if the phone ends up blacklisted you can take it to the corporate store and might have a better chance of resolving the issue.
 
I've sold my last 3 or 4 phones on CL. I always keep the box and have no problem meeting at a Sprint corporate store so the phone can be verified before the sale.
 
I've sold my last 3 or 4 phones on CL. I always keep the box and have no problem meeting at a Sprint corporate store so the phone can be verified before the sale.

That's actually a great idea to meet at a Sprint Corp store! Not that I've sold any devices but I would've never thought of that if I were to sell a device.
 
I would go with Swappa.com. They're selling mint condition for around that price. Don't mess around with CL since you don't have to.
Swappa has IMEI check, etc.
 
I would go with Swappa.com. They're selling mint condition for around that price. Don't mess around with CL since you don't have to.
Swappa has IMEI check, etc.

I agree. It's my preferred way to buy and sell devices. The G4 I'm typing this on I got from Swappa.

via an LG G4 and the AC beta