Local bike shop bike shops have begun themselves to sell products online. A recent development is the introduction of brand specific stores from bicycle manufacturers such as Trek Bicycle Corporation. Other manufacturers, such as Specialized are strengthening their channels with "concept stores". According to the National Bicycle Dealers Association, in 2007 there were approximately 4,400 "specialty bicycle retailers" in the USA; down from 4,800 in 2005. Although they sold only 17% of the bikes, up from 16% in 2005, they collected 49% of the dollars, up from 47% in 2005. In 2004, the average specialty bicycle retailer had gross sales of $550,000 per
Wilderness Trail Bikes of Marin and to market the components that they were producing. In 1988, Patrick Seidler, began working with WTB. This new company focused on licensing technology developed by WTB to mainstream bicycle industry manufacturers. Examples of technology developed by WTB that were produced under license include designs for tires made by Specialized Bicycle Components, the Blackburn B-52 water bottle cage, geometry for the 1987 Trek Bicycle Corporation mountain bike line and the use of Greaseguard in the top-end Suntour XC Pro component group. In 2002, Cunningham and Potts ceased to be part of WTB, leaving Mark Slate as the sole