user: Question: What is the maximum purse prize of the Northeast Delta Dental International Championship?
Columns: ['Year', 'Dates', 'Champion', 'Country', 'Score', 'Tournament location', 'Purse ($)', 'Winners share ($)']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: [2013.0, 'Jul 19–21', 'P.K. Kongkraphan', 'Thailand', '207 (−9)', 'Beaver Meadow Golf Course', 100000.0, 15000.0]
SQL:

assistant: SELECT MAX("Purse ($)") FROM "Table";