Go quickly to AudioAdvisor.com ... There is a Arch 5 demo pair for $129 as well as caster/wheels, extra shelf and cable management system. The rack itself is the standard version, don't know if you are looking for the higher up version. In whatever case, audioadvisor is a good place to get Salamander stuff.
Also on Demo stuff, if you type in Coupon Code 701DM10W they will take off another 10 percent when they process the order through August 3rd