Question 1:
Why is EOS Laser sintering so expensive relative to other prototyping techneques ?

Answer 1:
EOS laser sintering manufacture working parts not prototypes.

Question 2:
How can I get my parts unit price cheaper?

Answer 2:
Fit more parts into the EOSM process chamber - Build Volume = 250x250x Part Height (max 200)
or
Fit more parts into the EOSP385 process chamber -Build Volume = 340x340x Part Height