Baseball America posted a list of what are this years bonus pools for each club. The Mets bonus pool is $7,151,400. Which is $368,900 more than it was in 2011.
Regarding the bonus pool Baseball America writes,
Any team that exceeds its bonus pool by 0-5 percent must pay a 75 percent tax on the overage. The penalties escalate, with a 75 percent tax and the loss of a first-round pick for a 5-10 percent overage; a 100 percent tax and the loss of first- and second-rounders for a 10-15 percent overage; and a 100 percent tax and the loss of two first-rounders for an overage of 15 percent or more.
Click here to view the bonus pool for the rest of MLB.