Just ordered a case (4, 4 litre jugs) of my fave oil for $7.60 litre from my local PetroCan bulk dealer.
Duron E Synthetic 10/40. Classified as "suitable" for JasoMa.
Still a good bang for the buck, high spec 10/40
I've been using Duron oils for about 10 years in a variety of bikes. I think every bike I've owned called for 10/40.