Scott,
Look for a Nissan official repair shop and buy it from them. That is where I was told of all the options and paid much less than you are being quoted . I found a one man operation and am glad I did .
I paid $50 for the prop.
$178 for the alternator, installed .
Vertical start option was $75 , part #369B059110 & #3b2059120.

If they don't know of these options , then I would be real careful about dealing with them.

It comes with the stock prop , it is part of the package and you need a spare anyway .