Just got an email from The Mysterious Bookshop.
Sherlock Holmes In 221 Objects: From the Collection of Glen S. Miranker is back in stock. At least for now: they claim to have a very limited number of “first edition, signed, limited copies” at $60. They also state “The Grolier Club will be printing a second, more expensive edition soon…”
So if you were interested, but gave up hope, now’s your chance.