May need a new roof. Help please

[Fuzzuki]

My plastic rear window is coming unstitched.
The roof is in really good condition. I thought it had been replace last year or the year before, because it looks soo good.

Now the rear window is becoming unstitched. I guess the thread is rotting or something.

Is there a quick easy fix until I can get it replaced.

I called my interior guy.
He said it would cost about 800 to re-stitch the existing window back into place because they have to take it completely off to do the job. ( I knew that was the case)

Then he said I could buy a new roof for about 1,500 bucks with plexi or a roof with glass for 2000 plus the re and re costs.

Is there a place to get cheaper roofs?

If I buy it, he will put it on for me.

Thanks guys.