Why Best Buy charged so much for the iPhone X

Best Buy was marking some iPhone X pre-orders to $100 over Apple's price — but no longer. 
The electronics retailer announced today that it will no longer allow customers to pre-order the iPhone X unactivated and with upfront payment. Apple aficionados will now have to order the phone tied to a specific carrier, and with an installment plan. 
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When you purchase an unactivated phone, you're