Flyting. 11k is quite expensive - But how much does wrecking the aircraft during a night approach cost?
(Even something like an over-torque or over-temp due to a misjudged approach will eat up 11k in a heartbeat)
We had the HAPI installed on a site we used regularly at night - It cost around 8k ten years ago and was excellent - made a huge difference to the stability and safety of the approaches and the confidence / comfort of the crews.
I know it's difficult if you're on a limited budget but there are times when you just need to say - "we either buy this or we don't do fly here".