Hi Andylit,
Original slings have increased in cost lately. Most that I've seen have been selling in the $80 to $100+ range.
Here's some pics of reasonably priced reproduction slings that I've purchased off of EBay (One is an 1887 type and the other a web).
I purchased them from the sellers listed below:
(You need to Login to view media files and links) (You need to Login to view media files and links)So far I've had very good buying experiences with these sellers who provide descent quality goods and fast shipping.
Kind of a stretch, but you could also purchase an original or reproduction NobuckL sling. After we entered WWI the NobuckL sling was used with Krags for training purposes only.
The Remington 1917 on the left has a NobuckL sling attached.
They can be readily found on EBay as well.
If you already haven't done so... click on the crossed rifles at the upper right of this page which will take you to the KCA intro page. Hit refresh until you get to an impressive rack of various Krags with an assortment of slings attached.