Super Shuttle from Ontario is so expensive...when I booked us into ONT I did so thinking SS was the same from everywhere...sigh. What was worse is that first DS and I were arriving, then hubby; SS from there has a "first adult" amount then subsequent passengers...we had to pay TWO first adult fares b/c we did it that way.
So definitely check out that goldenwest link, to see if it's worth it.