It's a solid at best game, but it's typically far from solid 90% of the time. If you're sitting around and cracking on the game, you'll have a ton of fun though.
It wasn't horribad, but it was one of those games that shouldn't have been made for Xbox 360. It was more of an Xbox/PS2/GC game that just popped up on the last generation's consoles.
$6 used is what you could find Mass Effect 2 or Oblivion (standard edition) for...maximum. I found ME2 for like $4.90-something maximum. $6 is too rich for Blood in the Sand.