another vote for jenson for mail order. Have recently had an EC70 bar and EC70 post from them for less than they go for used here (£40 and £25 respectively when I got them), also got an Easton Vice stem for $12 (about 8 quid?). Insanely quick shipping, quite cool to use their tracking facility and watch your fork fly around the world.
http://www.pricepoint.com is another mail order giant, http://www.speedgoat.com are a decent “LBS” with a good mail order and occasional deals. http://www.performancebike.com is a national chain with mail order wing, a bit like Evans Cycles but with better service 🙄
edit; according to speedgoat site Fox bans US retailers from selling their products abroad. Dont know if other outfits obey that rule.