Apple has launched a limited time promotion for its GiveBack trade-in program, offering customers upgrading to a current iPhone up to $100 of additional trade-in value for their old iPhones. For example, customers trading in an iPhone 6 Plus will receive $200 in credit, an increase of $100 over the usual trade-in value, while the iPhone 8 can be traded in at $300, only $25 more than the usual $275 credit. The bonus appears to be limited to purchasing…
