15. HTC One Gold Edition
Gold rush has sparked in the smartphone industry with Apple’s gold-coloured iPhone 5s. Both HTC and Samsung announced their gold-colored variants of flagships Galaxy S5 and One (M8) in 2014. Because of the gold rush, famous smartphone company decided to make the most expensive HTC phone ever created – HTC One (M7) Gold Edition. Only five of these phones were created, each valued at $4,200 each.