The selling price of an original iPhone is rising. The hype around the 10th anniversary might mark a high water mark, but it might also be just a roadmark on the way to a much higher price. The original iPhone is ripe for speculation.

If it was me, I’d only invest in an unopened original iPhone with a box/shrinkwrap in perfect condition. And as you make your way through the linked article, keep two things in mind:

• The quoted prices are what sellers are asking, not necessarily what someone has paid.
• The price can just as easily go down as up. This sort of investment is speculative.