As long as they are going for $120/pr, the Sony Core SS-CS5 is a great value (they were a very good value at $160) and worth consideration
BestBuy has a 14 day return policy, or you can buy through Amazon Prime and have 30 days to return.
You can also get the towers for $160 each and $120 for the center, so you could get 6 ea. cs5 bookshelfs for $360 (with an extra) or Towers for $320/pr, center for $120 and surrounds for $120/pr for a $560 5.0 package.