Occasionally they are around $16 at Woolies/Coles. BigW (owned by Woolies) had them on OzB at $9 for 4 online only but offered click and collect too, but then never had stock online and while stores had plenty, but would not cover online deals. It was very shady IMO.
I havent seen them cheaper though than about $16. Masters has them for $16.90 atm Masters Home Improvement
But I think closest Masters to us is Caboolture/Morayfield.
I measured the NICE lithium batteries from FastTech at the same mAh as Energizer Ultimate Lithium batteries, I have the details somewhere but from memory they were both just under 3000mAh at 1A draw. I bought 40 from FastTech for $40 ($1 each).
Get yourself a Citibank Plus bank account or 28 degrees credit card. Either of which don’t have currency conversion fees and use XE rate. No fees for opening or holding the account/card either so costs you zero.
Best of all I just received my 8 pack AA eneloops from DS purchased earlier in the week ($24.95 including postage) and somehow THEY DOUBLED UP ON MY ORDER! :):) 2 separate packs sent, identical order numbers and tracking. Two 8 packs for 25 bucks!