Hi Pati,
I'm so sorry to hear that your 2017 Sorcerer Mickey Mouse ornament broke. I know how disappointing that can be, especially if it is part of a series you are collecting. My favorite Tinker Bell tree topper broke a few years ago as I was removing it from our Christmas tree, and I haven't been able to find a replacement for it yet.
However, I think you will have better luck replacing your collectible. While I didn't see your ornament at the
online Disney Store, I found it very quickly on eBay by searching "2017 Sorcerer Mickey Ear Ornament." It popped right up on the first page of search results. If you're looking to replace that ornament quickly, I suggest you grab it on eBay.
Of course, you could call the Disney Parks merchandise line at (800) 362-4533 to see if they have your ornament in stock. They are tremendously helpful in locating souvenirs throughout Walt Disney World Resort. However, I have found that dated merchandise tends to disappear very quickly so they may not have any 2017 ornaments left. It certainly doesn't hurt to ask, though.
I'll keep my fingers crossed that you can get a replacement for your broken ornament soon.
Sending best wishes and pixie dust,
Jill