Does anyone know the artist responsible for these or if they're doing batches of these?

Or even how to get my hands on an existing pair?

Those were made by [user=fuzei-chan], but I believe batches are no longer being done for them. However, some people over at the r200 Advertising subforum might be selling their copies (I see none for sale at the moment though.) Doesn't hurt to make a thread there to ask. :) Good luck!