I've had bad luck with runners, which is especially saddening since they are my favorite breed. I have oodles of other breeds, and haven't lost any others save for a sickly mallard, but my first two runners that I raised from day-old (a white Twinkletoes and penciled Stretch) died randomly at a few months old, within a day of each other, no symptoms besides weakness that day. The other 10 or so they were with at the time were perfectly fine. After a few months, I found some more good quality ones and got a white girl and a black pair (Bordeaux, Merlot, and Chardonnay). I noticed Chardonnay (white) suddenly couldn't walk yesterday so I brought her in to keep an eye on her. I noticed this morning that she had a mild case of bumble foot and ran to the store and got supplies to treat it. Went this afternoon to treat her and found her dead.

The blacks at least seem perfectly fine, but then again, so did Char less than 2 days ago. No issues at all with the other 13, almost all different breeds.
Don't have pictures yet of Bordeaux and Merlot but this was Chardonnay.
All that being said, DH, although he is very against my buying more hatching eggs until spring at least, knows how much losing Char upset me and offered to buy me runner eggs if I could find any. (I've hatched out oodles of chicks, but have yet to try hatching ducklings!) The only I could find on
eBay look iffy in quality. Anyone here have girls still laying and sell eggs, by chance? :}