Good luck finding the obf fitteds used that cheap unless they're in crappy condition - I normally don't see them under $18. You might find the snapless at that price but they're pretty highly sought after. Check out her fb page on the discussions tab since people sell there.
Re: ISO: Sbish size M or snapless IHA: Sbish size S
Update! I found the two Sbish M I was looking for on Spots! (yay!)
I still have 2 size Small for sale. $15 each+shipping! (in GUC/VGUC)