Some picked up from ebay, some from dovebid, and a friend who deals with used equipment in China. They were acquired separately over a period of years. I'm just worried about their age and longevity. Most of my gear are made in the late 80s, with a Fluke 8840A maybe late 70s.
Some are too old not worth refurbishing, as they have little life left in them especially those with aging storage memory.
http://www.techrentals.com.au/ has sales on their used equipment once a while. I got a HP 3468A for $180 with recent calibration papers a three years ago.
I just picked up this 25kg Fluke 335A 0-1000v from local
http://www.tmgtestequipment.com.au/ recently. It's just massive look at that ATX psu on it. Unfortunately it's not the 335D but these equipment don't appear every day I just have to snag it up and it was a once in a lifetime bargain. I can just drive there and pick it up. Unfortunately bargain didn't turn out, I don't think the analog meter works. I will do the electronics refurbishing and start a new topic on it.