Purchase

 The original Darkstar CD's are long out of print, but you can still find copies at places like Discogs or eBay.

I also found an unopened box of the "Marching Into Oblivion" picture disc vinyl LPs in my closet recently, and I've put them up for sale on Discogs.com. 
Click the link below to visit the shop.  I have several Psychotic Waltz items for sale there too.