Little bit of an unorthdox 'deal', but I think this one has pretty big long-term payoff.
Simplicity is a not-for-profit Kiwisaver fund with an online-only business model. It's one of the lowest fee kiwisaver providers out there - according to Sorted's 'Fund Finder' it's second only to the BNZ Cash Fund (which only invests in cash assets) - see http://fundfinder.sorted.org.nz/funds/all/fees/.
There's a table on their blog (https://simplicity.kiwi/simplicity-news/crazy-kiwisaver-fees… ) which compares their fees to some other providers. potentially significant savings to be had if you are currently with your bank.
Doesn't show the fees for lesser amounts in their table. Considering the average people have in Kiwisaver is less than 15k according to the media it really should compare with lesser bands