Sometimes it just pays to check with your Nissan dealers parts counter.
This Datsun 1200 Blinker switch is on offer on
eBay for $125 as a Buy it Now deal.

I bought one about four months back from my Nissan dealer & got change from about $95. It is still a listed item, ex stock Melbourne. There was no freight or postage involved either as it came in a general shipment of parts to my dealer.
In my case the warehouse in Melbourne was out of stock but a new shipment turned up within a week & I picked it up about 4 days later.
There were two blinker switch part numbers for 1200's but the newer one supersedes the older & it remained unchanged for the remainder of 1200 Ute production. [at least untill 1992 & probably untill 2008 for Bakkie production]
Sometimes it just pays to make the call to your friendly Nissan parts man.
Oh yeah, he originally had 5 available & two people have paid the $125 & bought one each.