Amsoil at Murray's ?!?

Cleveland, Ohio
I stopped in at Murray's Auto parts here in Cleveland looking for the 5w-40 Mobil 1 Truck & SUV oil with the yellow cap (not this far east get) and found instead that they stock Amsoil 5w-30 and 10w-30 oil on the shelf for $5.99 per quart. They were the ASL product code for the 5w-30 and the ATM product code for the 10w-30. I am not sure which version/grade of Amsoil this maybe, but I sure was surprised to see it there. Seems like a good price to me, but then again I have never bought Amsoil before either. Not sure if anyone has ever noticed this before or not.