I have the one you are talking about.
When I had my used Nexus 30 I used it and it did save me the hassle of crashing.
It's been sitting in my cabanon for almost 2 years, I just never put it for sale.

But I haven't seen it around for a while now.
Be glad to sell it though really cheap if interested. It just takes space.
PM me if you like.

Don't like to do this on the forum, it's just a coincidence.