You might try www.cakesbysam.com. I went to the shop online button and then used the search box and typed in cupcake stands. A found this one a little bit down the page and it looks very similar to the pictures you posted. It's called, "5 Tier Adjustable Cupcake Stand". There are tons more as well, so you could just browse thru those.
There is also www.bossmanufacturing.com
Hope this helps!
Thanks! I'll go take a look.
How about this one? http://www.favorfrenzy.com/proddetail.asp?prod=810-130-05
If I am not mistaken, not that long ago a CC member's husband made one for her and they posted the instructions in the forum on how to make it.
You may want to do a search on cupcake stands in the forums.
HTH, Miss Lizzy