I ordered this one
Shipped the next day, I haven't gotten it yet but they have good reviews and have sold a lot of them. I'm guessing overstock since the EOS M hasn't been a big seller. Anyhow for genuine Canon $85ish is hard to beat.
That's the deal. I recently paid $119 for the same thing. I would want the adapter to be OEM, however worrying about gray market is silly for this item.
Has anyone received the adapter from this eBay seller? Is it a genuine Canon OEM? Thanks!