Completely understandable but just think, we have seen thousands of forum members and members across many Facebook groups who have attempted to glue their window in and I literately can't remember one who did not come back after a while to tell us it didn't work and they are now ready for a replacement.

Plus that glueing process is not easy. It takes time, patience (and a lot of money if someone else does it) just to fail again in a few month.
These cars are now 18 years old and the glue is a weak spot but it's expected for convertibles of this age. I have spoken to many BMW, VW, Mercedes convertible owners form that era and before and most of them have a new top. Some of them tell me about separated seams, windows falling out, tears, wrinkles etc.

But as always - it's up to you. Being in the UK you could probably get the BAS top for cheaper because they are from there Same specs and material as factory but with a better reinforced window
​​​​