for those looking...
I found this with English subtitles on Ioffer. It is a copy from the original at a fraction of the price, shipped from the USA.
what ails most madmen is realitys grasp or escape, a paralysis of analysis
I found this czech film available from http://www.ebay.com/itm/Na-Samote-U-Lesa-Seclusion-Near-A-Forest-DVD-1976-Czech-Menzel-Comedy-/131380958925?hash=item1e96ea56cd
this dvd is also available from czechmovie.com
There is one benefit now – one that can save you a chunk of cash. At the
czechmovie.com, you can buy any film at a 15% discount with the discount code FREE15!
http://czechmovie.com/d/na-samote-u-lesa-seclusion-near-a-forest-dvd-1000014/