The cheapest place I found it is on this website:
www.sewforless.com selling a 17 ounce spray can for $13.49
I'm guessing s/h is additional. Best price for this big can. I read the blogs for this item and it gets rave reviews. Never used this or anything like it, so I guess I am in for an awaking. I hate basting and pinning. and this may just make it easier for me to do.