As part of their March sale TeamMoto have some engine oil on sale, I've had my eye out for a deal for my bike for a while. Just picked up a 4 litre bottle for my motorcycle.
Motul 3100 & 5100 4L (Motorcycle Oil) 25% off $49 & $59 @ TeamMoto [Brisbane]
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A good price for 'motorcycle' oil, no doubt. Protip, though… dig through the Penrite cattledog in 'reverse' (ie: check various oils to see what vehicles they're suitable for rather than searching for the oil that suits your bike) and you'll find that some of the car oils are actually also recommended for motorcycles AND that the car oils are $10-$20 cheaper for a 4-5 litre bottle.
By way of example, the fine print on Penrite HPR 10 Gas says "safe for wet clutch motorcycles", is perfectly OK for my bikes, works perfectly OK in my bikes, and is typically $15+ cheaper for a 5 litre bottle than the Penrite oil that's listed for my bikes.
(My mechanic's advice was to stick with the listed/recommended oil while the bike is still under warranty to avoid any silly accusations if you need to make a warranty claim for something)