How much more expensive is ECC ram? I don't have it and I've never experienced obvious issues, if it's a lot more expensive it's not really worth it for the once or twice the desktop will likely experience an actual issue
How they get you is Intel will sell you a xeon which is the exact same die as an i5 in a different package for more money.
https://www.servethehome.com/intel-atom-c2000-series-bug-qui...
http://www.asrock.com/mb/AMD/X370%20Killer%20SLIac/#Specific...
(Generally, I don't think ECC actually does matter that much for us casual/home users, but I like to reward the people who actually do make it easy to "do the right thing". Same deal as only purchasing AMD graphics cards since 2005-ish(?).)