Note (from techbargains) that Oni is 9.99 as well. Oni was released a while ago I believe and isn't supposed to be nearly as good as Metal Gear Solid 2, but its still a nice price for what is suppose to be a pretty decent game.
I think its worth a shot. It says nothing of the sort about a strategy guide. I did buy one, however the more and more I think about it, UPS may be bringing me a Metal Gear Solid 2 demo disc in the near future. However, it doesn't hint at that in any regard either.
Its very peculiar, definately tempting enough