Hi Tony,
I assume you are after something like this:
http://www.genr8.net.au/product.php?part_id=271933
A universal stalk indicator to fit on the column.
No price on this one, but the last similar one I brought (admittedly 4 or 5 years ago) was about $35.00. You do not have to use a column switch, any decent 3 way switch fitted in the dash will do the job, and also fill an unwanted hole in some cases. As these switches are generally not self cancelling, I suggest a good buzzer as well.
You need to shop around a little, some auto electrical wholesalers are very helpful!
If you do get desperate I will get a price from my local bloke, unfortunatley he also owns a Jeep, there is just no accounting for taste.
Rich