Many thanks to all you guys for your comments.
TimR and Phil Herring – have checked with SBO Store and their price is good for one of the items. However, they don’t list the other one on their parts list. I always check the SBO Store and Cat. Direct out, as I have had good service from them in the past.
Unfortunately, with the fairly high shipping costs to Australia, I have to bundle my order, where possible, to achieve some scale of economy. On bundled smaller items, the savings on the parts themselves may just about exceed the shipping costs. It is quite different with high cost items, where savings usually exceed by far the freight expenses.