Haven't even looked at the prices but even if Tiger Woods is only $2 it will still be good value in the major that was made for him and suits him even more now because of recent course lengthening.
Some good value might come from Padraig Harrington, Henrik Stenson, KJ Choi and Chris DiMarco.
Two other sound bets would be Ernie Els (who I think is overdue here) and Vijay Singh.
Also keep an eye on the Argentinian Angel Cabrera who is a player that most would never have heard of but he keeps finishing in the top 16 every year, thus ensuring a return trip for the following year no matter what happens to his game in the meantime.