You know. I thought this as well.. and so I went off to see if Amazon had indicated they were "scrap heap fodder" yet.
I personally suspect that they make a good 4 or 5 hundred % profit on those device - where the others are (comparatively) loss-leading devices.
So, I think the DX will "outlive" the cheaper devices in terms of Amazon love - because they are a cash cow.
: )
Happy to write up those scripts now we can confirm they are "safe to run"
(NB. Don't run them with no space on the device, DUH, and NO not even I did that)
Cheers mate!