Service Action to Prevent PSU Failures in ReadyNAS NV/NV+

Can anyone recommend a vendor that has actually has NV PSUs available? Every vendor I've checked with says it is a special order item with 6-8 week lead time. Currently have an order in with Amazon but no idea when it might actually ship. Maybe I should buy 2 this time so I have a spare then next time it my unit goes down...

Here's the expected official response from Netgear online support recommending Google shopping:
"Thank you for choosing Netgear ReadyNAS, my name is Cody and I will be your support engineer. I understand you have an NV with power supply issues. I did check your hardware warranty but it has run out, and I also ran your serial number through our recall list (as we have a known power supply issue with some of our devices who fall under a certain range) and did not locate it there. In order to replace your power supply, you'll want to look for part code "RND4PSU1-10000S" in your searches. I did Google search the part code for the power supply and did find many locations that offered it."