I use the 505 spray and it comes in a large 14.7 oz can or a small 7.2 oz can. The 14.7 oz is the one that's $18. on Amazon. The small can is $12.46. I like the way 505 works and how well it holds so I usually watch Quilt in a Day emails. They have some really good sales on 505 spray. I stock up then.