I just found this never used fleece Halo SleepSack Swaddle in Sadie's blanket drawer last night, but she doesn't even need it anymore (oops!):
Size small. It's been washed, but never used. It was purchased brand new from BRU for $24.99, but is listed for $19.73 on Amazon. I'm asking $12, shipping included.
Hopefully someone else's LO can actually get some use out of it!