I have always been surprised at how long certain mac's hold there second hand value. And this is especially true when it comes to the old aluminium mac pros (pre 2013) But with the latest Skylake announcements that they would both be offering slightly faster speeds and lower power drain. They also announced that Thunderbolt 3 would be added and that they would officially allow eGPU's to run through it. Now obviously computers loose value over time, but could this latest intel update finally mark the end of the over inflated high prices for used and old alloy mac pro's? As now these old goliath machines will no longer have the advantage of being the only mac to offer high end graphics cards. And a lower end spec mac should now be able to offer similar performance for both a fraction of the size, power resources and money.