Mayor Michael Bloomberg says the market will determine the success of the city's ambitious bike-sharing program.
Bloomberg said on WOR Radio on Friday that anti-bike criticism "makes good theater."
More than 9,000 people who have signed up for the program will be able to ride starting Monday. The bikes will be available to anyone starting June 2.
An annual membership costs $95 and a day pass will cost $9.95.
Some New Yorkers say the kiosks that have been set up for the bikes take up too much space on the streets.
Others have complained because the program is limited to parts of Manhattan and Brooklyn.
Bloomberg said the program will be expanded if it succeeds.
He said New Yorkers should "let the free marketplace decide."