Hi, I need to know, is low end graphics (i.e. 8300, 7300, 8400, X1300, etc.)
Is low end graphics what? You didn't ask a question, so I can't answer it.
Rather then tell you which cards are better, try telling us what cards are available to you in your price range. We can then tell you which of those cards is best. You should also tell us your system specs, and what the card will be used for. (starcraft 2 perhaps?)
Well a $50 gpu is much better then integrated for a number of reasons, for such a low amount of money to spend out IMO its definatly worth it.
Up to you though.
$50 for just a GPU not really any good in games, can still probably play older ones on low settings though.
$80 or so for a 8500gt/7600gt is best bet, although you'll still have to play newer games with relativly low res and settings. Older games should run fine though.
One thing to also take note of though is that toms benches are using quite old drivers compared ot the newer ones, ATI's latest cards performacne have greatly increased and nvidias latest cards are a bit better too.