Should I buy $18,000 iPhone 2G?

Absolutely not. The seller seems to think they have a ancient treasure. Sorry, it's just an old phone that hasn't been used. Yes, it may be valuable to someone as a collector's item (unopended box and all that), but even then, it sure the heck isn't worth $18,000.

MUCH better prices on certified used iPhones here:

http://buy.gazelle.com/buy-used-iphone/

Glyd is another good site:

http://glyde.com/buy/used-iphone

With either vendor, you'll be getting a phone that is guaranteed to work. Unlike Craig's List or eBay where you may be purchasing a stolen phone that's locked, and as such, is useless.

iOSAndroidRebel wrote:

And does the iPhone 2G have warranty?

Of course not.

Unless the slightly extra speed of the A7 chip in an iPhone 6 is critical to your needs, you'd save a heck of a lot of money buying a 5s instead. Price varies with condition and what service you need it for, but Glyd has a 16 GB iPhone 5s for AT&T as low as $140. Unlocked phones are always more. Search the site, or Gazelle's and see what they have.

I can't make that decision for you. It sounds like you are indeed collecting multiples of all iPhones ever made. As such, you would want the cleanest ones you can get - preferably new and unused for the best possible future resale value. Only you can know what is, or isn't worth the cost of the item.

Gazelle and Glyd guarantee it will work, or they'll replace it (I think within 30 days). Any actual factory warranty is long gone as they're all used phones.

Yeah, OK.