The part of a sentence "I am willing to spend" is correct and usable in written English. You can use this phrase to indicate that you are ready and willing to invest money, time, or energy in something. For example, "I am willing to spend the extra money needed to get the best quality paint for this project.".
And to save someone's life I am willing to spend some of that capricious currency called celebrity.
I designate an amount that I am willing to spend for my entire campaign, and each click on any of the ads in my campaign uses up some of that amount.
I am fortunate to have a job that I love, for which I am willing to spend roughly fifteen hours a week as a prisoner of my car, and an editor who lets me work from home when I am on the cusp of vehicular manslaughter.
In return, I am willing to spend a lot more at the gas pump and in my utility bills.
"I'm willing to spend the day sorting through papers".
I'm willing to spend a hundred million yuan for a chance to do something for the public.
"If I'm willing to spend the money on a Lexus, why won't they let me?" Mr. Newmark said.
Ludwig does not simply clarify my doubts with English writing, it enlightens my writing with new possibilities
Simone Ivan Conte
Software Engineer at Adobe, UK