I noticed this was listed as forthcoming in December 2012 but apparently it is now available - APM have apparently made a 152mm f8 APO doublet for USD$4200 which also comes with a hardcase, rings and a mounting bracket
http://www.optcorp.com/apm-152-1200-...ublet-ota.html
I would be curious to know what others might think of this evidently new design