I was lucky and picked mine up for not much. Through work. Paid no more than £150 for most of what's in my signature. Only my 200-500, 105 macro and 50mm were bought new.What's this SD card of which you speak?
My main camera is the D800, and I have a D300s for back-up work as well as where I want a fast(er) handling DX body. I also use a D200 for Ebay/cataloging since the small JPEGs and having a dedicated camera fits into my workflow well.
I've started collecting first and second gen Nikon DSLRs also, as well as the cameras from other makes based on them. They're often cheap even for lightly used examples(although I did pay plenty for my Kodak DCS 14/n and it was a huge IQ let down when I got it).
In any case, both my D800 and D300s have SD cards in them(a kind of pricey 64gb Sandisk in the D800, a smaller generic one in the D300s), but they hold the "back up" JPEGs and I rarely touch them. I use CF cards as my main removable medium for RAW files in those camera, and most of the others I have either take only CF or take CF and some other storage medium(early Fujis take SmartMedia, the Fuji S3 takes the now extinct and all but unavailable XD card, although the Kodak will take SD).
Of course, I do have to segregate my cards since some older cameras will roll over and die with >2gb cards(when I bought my D100 and was testing it in the store, it took about 10 minutes for it to format the 64gb card they handed me) and something like a 512mb card is a joke in a D800. My main wallet has few 64s, a bunch of 32s, and nothing smaller than 16. I have a second wallet with 1gb-8gb cards that I carry sometimes as a "just in case" and then a box that has 2gb and smaller cards.
BTW, thanks for the info on the older 24-70-I admit that I hadn't looked THAT closely at it. As I said, I won't buy "E" lenses, and that's because there are no film cameras that they're compatible with(I'm not dropping ~$2K on a lens that won't work on my F5 or F100). I just wish it went back far enough to have an aperture ring. The even older 28-70 2.8 AF-D-which does have an aperture ring-is too long for me on the wide end.