5 or 10 years, try 50 or 60, and even then I'd be surprised. The best bet would prob have been getting the original iPhone, I would expect that to be the most valuable in many years to come.Should I buy an iPhone 5, brand new in shrink wrap, and then sell it 5 or 10 years later? What kinds of ROI will I get?
Very interesting read but...it may be illegal to resell in 5 or 10 years.. http://www.marketwatch.com/story/your-right-to-resell-your-own-stuff-is-in-peril-2012-10-04/
Kirtsaeng v. John Wiley & Sons and the first-sale doctrine in copyright law is being challenged for any products made abroad.. So you would basically have to get permission from the copyright holder to sell your iphone. ..