If anyone is interested, I found several of the Valterra brand model A70 rinse nozzles in the discount bin at my local Camping World - for $7.
This does not necessarily mean you will find the same thing at your nearest CW, but if they are discontinuing them - perhaps you might.
Since I live 50mi from my nearest CW, it isn't convenient for me to pick them up for anyone. Prolly should have bought them when I was there.