Sorry I don't have a link, its in-store only as far as I can tell. Just go to the garden power tools isle, and look out past the end of the isle and you will see a big stack of these at the end of the opposing rear isle across the main middle corridor. http://www.bunnings.com.au/stores_81_Notting-Hill.aspx
This kit comes with the big 2.8Ah Li-Ion battery which retails for $129 on its own. Plus a charger ($69), and the ONE+ blower ($69), and of course the ONE+ line trimmer ($99).
This is different that the usual line trimmer kit ($189) because it comes with the bigger battery and the blower. The normal kit comes with the dinky 1.4Ah battery ($89) but no blower. (the small battery is useful for the small tools like driver/drills etc).
I did note how odd it was that it was advertised at $200 even, rather than the much lower label of $199. Anyway, I still bought it.
I have the previous model ONE+ NiCD line trimmer, and it has been going strong for 4 years now (past year on Li-Ion batteries). I recently converted/bodged it to use the grass gator nylon blades. It is starting to show its age now as I think my grass gator mod combined with the grunty Li-ion batteries is shaking it to pieces.
So anyway I tried out my new model line trimmer today and I'm very impressed. They have fixed all of the niggles I had with the previous model, being awkward to do edges, annoying bump feed, small cutting area.
This thing is very grunty with the big battery, you should easily get 30 minutes of hard use out of this on a single charge. I have heaps of the Li-Ion batteries now after getting some dodgy ones from China, now I have a brand new one to go with them.
Ryobi have also recently released a 36V lineup of garden tools including a similar line trimmer, but having used the old 18V one for 3 years, plus one year on Li-Ion 18V (that was the best upgrade ever), I think the 18V Li-Ion is just fine, and thats not even considering the excessive cost of the 36V kit.
normal price for 1 plus month, Bunnings dont have sales,but good value none the less