Entec has a bargain tab on their website for some proto types for $ 3,500. Not sure what that is all about, but maybe worth a call. Check with them and others for remanufactured units as well.
Sure understand the drain when trying to outfit the new boat when you are a two boat owner. My additions came after my prior boat was finally sold after owning the Albin for 10 months. A little over 10K of goodies finally found there way on board after that twin outboard center console was shipped from the right to left coast! Good luck with that Luhrs!
http://entecwest.com/index.htm