Unless i am missing it somewhere, I haven't seen any information about what kind of camera and lenses you plan on putting on the tripod. Since there is no info about the load factor or size of lenses, it makes suggesting a pod a rather random exercise. The only initial thing I would suggest is staying away from the rock-bottom units.
You say "wildlife", which then leads to longish telephotos. At the same time, you say "low cost", which is not a healthy combo.
For starters, which camera, which lenses?
C.