SAN FRANCISCO — Apple’s largest iPhone sells for $100 more than its other new model, but a new report says it costs Apple only $15.50 more to make the more expensive version.

Since Friday, Apple has sold more than 10 million of the new iPhone 6 and iPhone 6 Plus. The Plus has a 5.5-inch screen while the regular iPhone 6 is at 4.7 inches.

A report from IHS Technology says Apple will make more profit on the Plus version. The full price for the iPhone 6 is $650. IHS estimates it costs Apple around $200 for materials and manufacturing. The iPhone 6 Plus, selling for $750, reportedly costs Apple around $215.50.