Just doing a bit of research for a product. Would you consider $8 - $10k for a US Style MX radio Service that can connect to a Garmin GNS430/530 and provide METAR TAF and WEATHER Maps to the cockpit GPS Display.
The Unit would be similar in appearance installation and operation to the GDL69 see https://buy.garmin.com/shop/shop.do?cID=201&pID=228
The Unit would only operate on the Australian Mainland and would provide weather data link only (ie no satellite radio for music/programing)
Ongoings after install would be $35 - $45 per month.