I dived the Zen this time last year and the price was £70 Cy pounds. That was bus travel from paphos, 2 dives (guided) and a good bbq lunch! Worth every penny I thought, but if you don't have it then i suppose it is a lot but as the Zen is one of the top 10 worldwide dives (I read that somewhere!) it might be worth trying to find it!
P.S I dived with Cy Dive