In this weeks Newegg newsletter the WET610N Bridge is $89.99-12.00 coupon code “EMCYZNT29” and free shipping!
and yes its FRC 2010 legal to replace the WGA600N
http://promotions.newegg.com/NEemail/Jan-0-2010/Top10Sale/images/items/33124338.jpg
enjoy 
http://promotions.newegg.com/NEemail/Jan-0-2010/Top10Sale/index-landing.html?nm_mc=EMC-IGNEFL012610&cm_mmc=EMC-IGNEFL012610--email--E0-_-PromoWord
http://www.newegg.com/Product/Product.aspx?Item=N82E16833124338&nm_mc=EMC-IGNEFL012610&cm_mmc=EMC-IGNEFL012610--NetworkWirelessAPBridge--LP1A-_-33124338