My speaker just fell off!

[ziggythegreat]

Hi, first time poster.

I noticed this morning that my front passenger speaker (mounted into the door) fell off -- it fell into the door. I looked at the other one (driver side) and the strip around it is coming off, which is undoubtedly what happened on the passenger side. I did a little google searching and it looks like the part that I need is called a speaker finisher strip, but I can't find any side that provides it. BMW is charging $250 to replace -- is this the way to go, or does anyone know if I can find/replace this on my own?

Thanks in advance.