True glass frogs like Centrolene ilex? No, not really. There are a few Hylids that are sold under the name glass frogs but they are not realy true glass frogs. Not even close.

I saw some glass frogs at Black Jungle last June, they are truly translucent. The species I saw was Hyalinobatrachium valerioi. They weren't for sale, they were attempting to breed them for the Atlanta Botanical Gardens.