Buying spokes

Now that I've got my spoke sizes (266 mm and 268 mm).  It's time to look at buying.  I'm looking for stainless steel spokes (in silver) that are double butted with an elbow.  The standard (according again to Musson's book) is 2 mm - 1.8 mm - 2 mm.

Web sites for searching on spokes are a mess.  You've got to be careful about names, sizing, and whether it comes with nipples.  For example, the DT Swiss Competition seems to be the standard double butted stainless steel spoke in their line - but it is available in several configurations, including straight pull, 2.0/1.8/2.0 and 2.0/1.5/2.0 - and of course in black or silver (looks like some other colors as well. To make matters worse some vendors use the SWG (standard wire gage) measure and call these 14/15/14.  And that's not all, some vendors leave off the 3rd number, so when you see 2.0/1.8 (or 14/15) you cannot tell if the spoke is actually double butted or single butted without clicking on the item.  Sometimes you see these written as 2.0/1.8 DB.  I've found that virtually all the DT Swiss Competition spokes listed as 2.0/1.8 are actually the double butted (perhaps they don't make a single butted spoke).

I looked also Sapim spokes - their standard is the Sapim Race double butted (2.0/1.8/2.0).  Their lightweight spoke is the Sapim Laser, which has a 1.5 mm center section.  My thought is that the narrow center is probably too light for touring.

Pricing is all over the place - depending on packaging.  Bought as singles, the DT Swiss spokes tend to be in the range of $1.00 to $1.30 (with nipples).  Best deals are in boxes of 100 (or 72), which seem to get you down to about $0.75 per spoke. All the better deals seem to be without nipples. At their cheapest (a box of 100), brass nipples seem to run about $0.12 each - so you've got to factor that into the cheaper spokes.

Here's some of the deals
Outside Outfitters
- DT Swiss Competition Box of 100 with nipples at $0.82 each.
- Wheelsmith bag of 50 without nipples at $0.74 each + 0.12 per nipple = $0.84 each

Thor USA
- Sapim without nipples $0.50 each + 0.10 per nipple = 0.60 each

The Thor looks like the best deal - but shipping is $10, so for 80 spokes I'm adding another $0.125 per spoke to get a total of $0.725 including nipples (delivered).  I've bought 40 of 266 mm and 40 of 268 mm along with 80 Sapim 12 mm silver nipples.

UPDATE (April 13,2016)
Working on the 2nd bike.  ThorUSA is still the best deal.