Build list for anyone interested to see its not too expensive to get started as most individual items aren't pricey,can space out the purchases of non essential stuff whilst cycling. Live stock is a different story depending on how far you go, I'll cover that when its fully stocked with fish and soft corals.
Aquanano 40 with stock 55w heater and 500l return pump. $139
Stand, used stand from trade me $30
Finned 16inch fugeray marine+ led light $90
Resin sk300 power skimmer $45
Egg crate for dig media rack $20
2 x seachem the bag media bags $25
500ml phosgaurd and 500ml purigen (heaps...) $60
Fluval sea hydrometer $20
7kg dry rock $80
4kg aragonite sand $12
Wp10 wavemaker $75
Glass thermometer $4
Small mag float $28
Api saltwater test kit $40
Foods $30
Long scraper tool $20
Filter wool $10
Puredew RO water for initial fill $35
2kg red sea salt for initial fill $22 (obviously didn't use all)
Total $785
20l mixing container $20
400lph pump for mixing $20
50w heater for mixing $20
Thermometer for mixing $4
Water changing equipment total $64
4kg red sea salt (3 months of water changes at 10% per week) $35
Pure dew RO water for 3 months water changes $42
Pure dew RO water for top ups same period $42
Total water change cost for 3 months $129
= $11 per week
Maintenance currently
10‰ weekly water change, siphon, clean glass, empty skimmer cup
Top up every 2 days
Cleaner skimmer, return pump and power head monthly.