The following quote is from the NYTimes.
So I signed up for every and any race that anyone suggested to me. My nagging injury — and slow pace — limited my weekday training. But I knew that if I plunked down $50 for a race, there was no way I wouldn’t be at the starting line.
Could someone explain to me what the author means when she writes, "But I knew that if I plunked down $50 for a race, there was no way I wouldn’t be at the starting line."