If you shop around there are decent branded cameras around $90 to $120. There's an Olympus with more megapixels than you'd expect in that price range, Fuji, even Nikon.
Below that you're talking offbrands like Vivitar, GE, Kodak, Polaroid (and maybe clearance models from the better brands) -- they're probably good value, but I think I would aim a little higher and get something you'll enjoy owning for some time.
There are lots of review sites out there and the better ones will offer sorting by price range.