To be honest, I don't know if it's worth dealing with Ilford. They may state they have something in stock in the USA, but can take a while to reply to a reseller after confirming an order and inform us that it's on back order for a month or so. They are not accurate and their inventory comes from Australia where the new owner is located. The shipments from the plant still ship from Europe, so it's a pretty long transit time (at least for the US).
This may be a fairly new product which may not be announced in the states, but I do see it on their site. There are many types of metallic papers out right now and it's between luster (pearl), gloss and silver that we offer. About 7 different brands with at least 2 versions each.
I'm not familiar with their Crystal Gloss since it was probably before I started at the company, but it may be possible as the RC version.