What is the best way to fix a Chrysler Sebring convertible top rear windshield?

I have a 2000 Chrysler Sebring convertible top, but the glass came loose out of the top.
The glass is still intact, but not in the top any longer. I called repair shops who told me
I had to get an upholstery shop repaired- there is only one upholstery shop in the area
and they told me that I have to replace the whole top and glass- which will cost about
$600.

I'm wondering if there is another way to do this- or if this is the best route? The
replacing of both the top and the glass seems excessive, considering both are in good
shape- just not together like they need to be. If there is another way- please let me
know.