Loofah Vases

I picked up these porcelain vases at Goodwill the other day. It was kind of a coincidence, because i had dropped and broken a sea urchin vase by the same artist the day before. I don't know what ROOST is, but imagine it is the name of the store where they were sold originally. The original price is on the bottom of one of them - $64 each. I got them both for $10 at Goodwill. They are very thin and have a nice ring to them when i ping them. I'd like to know who made them and when [fairly recently, i imagine, but??].