Spotted this in the Engadine NSW store - had about 8 left on the shelf. Not sure if available nationwide. Can't seem to find it on their website.
Next cheapest price I can find online is Chemist Warehouse for $58.99
Thanks to douglasb Coles also have the Velvet Smooth Electronic Nail Care System for $30 off too, down to $36
Edit: That's my daughter's pink nail holding the pack in the photo in case anyone is wondering :)
These are a pretty good tool, but really GROSSLY overpriced in retail stores in Australia. The 'original' battery powered non-waterproof version, identical to the one sold here, can be had from aliexpress.com for USD$10 delivered. They're doing a USB rechargeable version of the 'original' style for the same price now (for example, this one).
I haven't found the new wet/dry version on aliexpress yet, but in time, it'll appear :-)
tl;dr: this is a legitimate bargain, but you can do MUCH better by buying from China
edit: as a further point of interest, the Scholl electric nail care thing goes for around USD$7, shipped from China, whereas they're offering it for $37 on a $30 off special at Coles and $35 at Chemist Whorehouse.