BundleHunt is currently doing a bundle deal that includes Paragon NTFS 15,
the fix cost for opening the bundle is $7 USD and you can add Paragon NTFS 15 for an additional $3 USD which works out to be half price of its official website https://www.paragon-software.com/ufsdhome/store/ntfs-mac/
I've also bought MacBooster 6 which is for $2 (RRP 39.95) http://www.macbooster.net/purchase/macbooster6.php
This is equivalent to CleanMyMac 3 if not better, hence a total of $12 USD ~ $16AUD
I've received the serial numbers immediately and have activated both products.
Nice. There are free solutions but this is worth it IMHO.