The Bunning's battery deal made me to search around the web and I'm pretty sure this is the cheapest genuine Bosch 5.0ah battery you can buy in Australia.
Bunning's $179
Totaltools $179
Amazon AU $205
Cheaper by $8.50 each compared to the Bunning's deal but you need to buy 2 and trade in your old 18v battery to get the discount however with this deal you get to buy just 1 battery with no trade in required.
Also, probably worth a try to price match with Bunning's and see if you still get the $50 off.
Hope this help those with Bosch tools. Cheers!
Or price beat at Bunnings ?