SV Date, writing for HuffPo back in February:

And because Trump insists on playing at courses he owns, the cost to taxpayers has been nearly four times as high as it was for Obama. More than two-thirds of Trump’s golf outings involve seven-figure trips aboard Air Force One, mainly to Florida and New Jersey, but also to Los Angeles, Ireland and Scotland. Obama, in contrast, played most of his golf on courses at military bases within a short drive of the White House.

The cost equates to 334 years of the annual salary Trump brags he doesn’t take.

Trump’s 29th Trip To Mar-a-Lago Brings Golf Tab To 334 Years Of Presidential Salary