IMO, the price is right. You have the right idea by researching AMD A series solutions since most Intel setups in this price range will normally include their integrated graphics. You're not going to find laptops that are considered "gaming" in that price range. Its not a super duper powerhouse, but it should play most games at reduced details.
for that price range here's the best deal on newegg: $450 Acer 15" - A6-3400 6520G 4Gb ram 500gb hdd
you can probably find similar specced/priced laptops everywhere else from other companies
but, seeing how you listed your budget at $600 max, you might want to consider this one too: $580 Acer 15" i5-2430, nvidia GT540M, 4gb ram, 500gb hdd. this gives you the awesome intel sandy bridge cpu and a good entry level dedicated GPU that has optimus option for battery saving.
The games I'm going to play on this laptop would run at med/high settings on my MX7118. The problem is that the x200 in my current laptop lacks several instruction sets that are needed to play some of my newer games (arma 2, Far cry 2, black props glitch on gmod/etc.)