Something like the Velbron DL-60
might be closest to what you are looking for. It's decent, gets good reviews and is priced right at $50.
To get a good
tripod and head I think you have to spend over $100. For example I like the Manfrotto 725B
, which comes with a quick release plate and a ball head for around $120.
For long/heavy lenses (over 300mm) you'd probably want something even better such as the Manfrotto 190XPROB
with a head like the Manfrotto 488RC2
The best tripods and heads (Gitzo carbon fiber legs, with an Arca Swiss ball head) run to over $1000, so there's a huge range of options and prices!
However any tripod is better than no tripod and the Velbron would be quite servicable if $50 is your limit and would certainly be capable of giving you much greater stability than hand holding, so I'd go for it!