Interestingly, another PPRUNE forum quotes the installed price of a new NDB beacon as between about GBP 30,000 & GBP 40,000 depending on the if power is already available to the site. The equipment component is about GBP 10,000. Thats about $42,000 - $70,000 Aussie installed with antennae towers, the lot! Another commercial company I found in the UK (NATS) conducts annual NDB monitoring that is compliant to the UK CAA requirements for GBP500 or $800 Aussie.
What is AsA's cost? If the UK can have private companies doing this function more cost effectively, why can't we?