My mother had a similarly shaped pan with a lid that she'd use for baking coffee cake and such when camping.
It was all aluminum and much less complicated (and likely not as useful) as what your talking about.
The closest thing I found is the Omnia Oven .
It looks they may be had for about $50.
cooking.stackexchange.com/users/6292/Jon Ericson
My company now distributes the Omnia Oven which is a modern version of a wonder pot.
These are available at http://lunatecgear.com/products/travel-gear/omnia/ and Amazon.
You are welcome to contact us if you have questions about Omnia.
858.653.0401 Cheers,Nick
cooking.stackexchange.com/users/16961/Nick Rhea
I tried my darndest to find a good answer for you, but I'm honestly not convinced that these are still being made!
Here is a link to an antique one on Ebay.
http://cgi.ebay.com/Antique-Wonder-Pot-Aluminum-Cooking-Baking-Israel-1950s-/350452375571?pt=LH_DefaultDomain_0&hash=item519896e013#ht_6415wt_1088
cooking.stackexchange.com/users/6327/codelegant
for those wanting to buy a wonder pot, like me.
i found this today.
wonder pot is being sold in israel (jerusalem and tel aviv), sharing the link.
http://www.carine.co.il/htmls/page_683.aspx?c0=13572&bsp=13800 i plan to have one shipped to singapore before december.
will keep you posted how this turns out.
cooking.stackexchange.com/users/14073/Io Medina Aceremo
I'm a librarian and I found this thread because I have a patron who is also looking for one of these.
It looks like they sell them here:
http://www.seadogboatingsolutions.com/omnia-stove-top-oven.html Hope that helps!-Kate
cooking.stackexchange.com/users/34902/Kate
In regard to the Wonder Pot, this item is made in Israel and it is imported to the USA by Weiss Gifts Ltd. in Brooklyn NYCan
be purchase by there site at www.weissjudaica.comHear is the direct link to this Wonder Pot: http://www.weissjudaica.com/system/scripts/results_big.cgi?product=100
cooking.stackexchange.com/users/45598/Moshe
Of course we still make wonder pots!
You can get one on http://www.planero.co.il/item.asp?cn_4320 (a supplier in Israel).
But I don't understand why you would want it, here it is considered a choice for people who can't afford anything better.
cooking.stackexchange.com/users/10079/Yotam
You can try looking at gelatin moulds, savarin moulds, tube pans, angel food cake pans or pound cake pans, they look the same as the lower part of the wonder pot:
This one has handles, others don't, and you could put them in a pot with a lid.
cooking.stackexchange.com/users/33143/raphaelh
The "wonder pot" is a type of stovetop bakeware that seems to have been popular in Israel during a period of austerity. I'm looking for a (preferably USA based) supplier for a new one.  Here's a link to a page with a photo of the item in question.
where can I purchase a "wonder pot"?
cooking.stackexchange.com
<baking><cookware><kosher>
cooking.stackexchange.com/questions/15137
cooking.stackexchange.com/users/6241/OpenID-test2
This item is is imported from Israel to the USA by Weiss Gifts Ltd. in Brooklyn NYCan, but a more modern version is the Omnia Oven. However, this is an item that is considered inferior and only for people who can't afford anything better. The Wonder Pot is still made in Israel. The Omnia Oven is also a good alternative.
The Omnia oven is the closest alternative. The Wonder Pot is still made in Israel. This is considered a low-quality choice.