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The King 8K is AUD$149 which is the same price as the Norton 8K at Nielsens.
The Norton 4/8 combo is definitely cheaper & a better buy but I'd consider a small Belgian Blue & a Coticule as...

G'day Marcus. I wasn't hunting for others but got my King stones there some time back & the 4k & 6 K are around 2" wide.

The higher grits are wider.

For you Aussies out there.
Went to Carba-Tec yesterday to get a Chinese polishing stone for a fellow member and lo and behold they had skinny ones in stock that were not advertised on their website....