I have lost my mini ipad sim card tray, can I get a replacement?

I am trying to establish if I can buy a mini Ipad sim card tray ... I have somehow lost mine and need a replacement.

I have called and the apple store person but he didn't know and said make an appointment with their tech people.

It's a 200 klm round trip for me and a long way to go to my nearest apple store to find out they don't have one.

Does anyone know??

Cheers

Jack