The tent on the WalMart site is marketed by SwissGear and I’m sure the only thing that is remotely Swiss about their gear is the holes, and that ain’t no cheese :)
http://www.walmart.com/catalog/product.do?product_id=4697882
There is a Wentzel model that is identical but for the hiking pole/center pole:
http://www.wenzelstore.com/acatalog/Ridgeline_Hiker_Biker_tent.html#a36263
Of course they don’t give the weight.
The other tent listed on the Campmor site is a known disaster :)
http://www.campmor.com/webapp/wcs/stores/servlet/ProductDisplay?memberId=12500226&productId=66486
I don’t have high expectations of any single wall tent in terms of condensation. We get away with a lot with tarps as most are quite “naturally” ventilated. If you add a floor and close the rest of it up, y’all better add some vents.
Looks to me like the newer Wenztel might ventilate okay the front flaps opened a bit. Where cheap tents fall down (pun very much intended) is with stuff like jammed zippers and tie-downs ripping out. You can guarantee you will need to toss the stakes, replace all the guy lines and poles, and seam seal it.
It does look interesting for $28, but you don’t get something for nothing and it’s no Hilleberg. Note that is has a vestibule, which I would consider a fairly advanced feature. It might be good for one summer season and a better-than-no-tent-at-all option. And not on an exposed ridgeline (nothing to flap about there!).