Retail ricing on Entreq grounding system

There have been a lot of discussions about both Entreg and Tripoint Troy grounding systems.
I know Tripoint is FAR more expensive, but I couldn't find any references to an exact pricing of Entreq system.
(As a side note, It's always been very irritating to me,that manufacturers do not publish pricing of the website???
Are they trying to keep pricing secret from potential customers? Imagine going to ANY retail store with no pricing labels on anything).
Can somebody post retail price of the Entreq system, please?