In a NutshellAn old iMac (mid 2011) had a drive go bad. So decided to replace with a speedy new 1TB SSD drive. But when tried to do so was stopped by "This item is temporarily unavailable."
StepsInstalled the drive (~45min)
Boot it up to recovery mode.
Used "Disk Utility" to erase and format the new SSD drive. (Mac OS Extended (Journaled), Capacity: 999.86 GB [999,860,921,128 Bytes])
Reinstall Mac OS X [Set up and install a new copy of Lion.]
[Mac OS X Lion : Mac OS X 10.7]
Dialog of doomA dialog is shown that says:
This item is temporarily unavailable.
Try again later.
Related links:Q: problem
Lion Recovery could not be created
The Recovery HD on this computer is damaged or not present. Recovery Disk Assistant requires a functioning Lion Recovery HD to create an external Lion Recovery.
At the end of the day it came down to getting a proper Apple ID associated with the original user associated with this installation. Makes you wonder how you deal with transfers of ownership.