Im not sure which wx stripping the shop is refering to but I have replaced the wx strip on the back of the top where it seals over the toneau cover and it sets in a track and can be removed....however the previous owner used glue to keep it in place and the old one came off in pieces.
Also I have replaced the seals at the top of the windows and if I remember they just slide in....but again, the previous owner had them glued in......
Having said that, I think it depends on how they are removed. If you can get them out w/o rips you could reuse them.
As for cost...they are expensive. Seems to me i paid about $70 each for the top window seals and about $100 for the rear one.
Check with
Hawks 3rd Gen Parts he carries a fair amount of vert seals etc....
Good luck,
John