"The U.S. bicycle market is dominated by imported bicycles. In 2011 it is estimated that 99% of the bicycles sold in the U.S. were imported from China and Taiwan, 93% from China and 6% from Taiwan."
"Department, discount and chain toy stores (mass merchants) sell mostly price-oriented products. Approximately 70% of bicycle units were sold through the mass merchant channel in 2011, representing 27% of the dollars due to the average selling price of $84. This channel's market share trend line was down from 2010 in new bicycle sales."
"39.6 million Americans age seven and older were estimated to have ridden a bicycle six times or more in 2011, according to the National Sporting Goods Association. This was down slightly from 2010. The peak participation year was 1995, with 56.3 million participants. It should be noted that the age limit on this number eliminates millions of young people who ride bicycles with wheel sizes 19" and under."
Right now the average price is estimated at just over $100 USD.
Some references for the US market:
The US NBA trade association published the following:

"The U.S. bicycle market is dominated by imported bicycles. In 2011 it is estimated that 99% of the bicycles sold in the U.S. were imported from China and Taiwan, 93% from China and 6% from Taiwan."
"Department, discount and chain toy stores (mass merchants) sell mostly price-oriented products. Approximately 70% of bicycle units were sold through the mass merchant channel in 2011, representing 27% of the dollars due to the average selling price of $84. This channel's market share trend line was down from 2010 in new bicycle sales."
"39.6 million Americans age seven and older were estimated to have ridden a bicycle six times or more in 2011, according to the National Sporting Goods Association. This was down slightly from 2010. The peak participation year was 1995, with 56.3 million participants. It should be noted that the age limit on this number eliminates millions of young people who ride bicycles with wheel sizes 19" and under."
Right now the average price is estimated at just over $100 USD.
"Elliot Gluskin, managing partner of the Gluskin Townley Group noted: "With 2012 imports of 20 inch wheel and larger bicycles consumption returned to the historically flat market, averaging 12.8 million core market bicycle units per year starting in 2000."