You can get a quote from CP for this. There is also a substitute known as Tian Ya. Tian Ya system is similar to the Cokin and the items can be interchanged. (ie you can use a Tian Ya filter on a Cokin filter holder and vice versa.) The Tian Ya series is cheaper than the Cokin and you can check out www.perfectpixelcameraparts.com for the price and info.